Hooked it up to two different vehicles with same issue. Leave the battery charger on the white wire pin and move the other lead to the brown wire pin; or turn the tow vehicle's right turn signal off and turn on the parking lights. Quote; Share this post. My buddy came over today and we hooked the boat up to his Nissan Titan and the running lights come on, but no turn signals or brake lights work on his. I found one ground in the front of the trailer and it is clean. If not, bad switch. 69 Posts . Right Tail Light of Trailer not working... Jan 31 2013, 9:01pm. Thus called because the system requires only four wires to provide all the essentials necessary to operate the trailer’s tail lights (running lights), brake lights… Discussion Starter • #1 • May 3, 2019. It's easy to do. Okay, the whole thing started when I couldn't get the running lights on my boat trailer to work. A lack of grounding causes all sorts of problems. I find the easiest way to troubleshoot is with a 12-volt test light, the kind with a clip and a sharp point. • Please help us pay it forward to others who would find it valuable by Liking, Sharing, Tweeting, Stumbling, and/or Voting below. How To Replace Boat Trailer Running Lights. Still doesn't work. If the bulbs are not the problem, disconnect the trailer's wiring system from the tow vehicle. no, it doesn't matter whether the truck is running or not. The brake lights and turn signal lights work but none of the running lights. But none of the other wires worked. Check the fuse on the powered converter to ensure it is still functional. Hi all. 571 Posts . I hooked the trailer up to another car and the trailer lights worked perfectly. The right tail light does not light up. He,p!! Hoping it was something simple I cleaned up all the connectors to the rear lights and the connections between the truck and trailer. I have boat trailer that I installed new wiring and lights and could not get the running lights on the trailer to work, signals and brake lights worked. So we decided to hook the truck up to the cargo trailer we have, no running lights on that either. How? The brake lights and turn signals work fine. How? the running for the trailer, is seperate from the running on the truck. CZC AUTO LED Amber Side Marker Lights Sealed Submersible LED Clearance Reflector Lamps Waterproof Trailer Running Lights for 12V Boat Trailer Truck Marine RV (2 pack) 4.5 out of 5 stars 439. $5.99 $ 5. The trailer lights worked fine on my 07 Chevy Tahoe. Chat with an expert one-on-one now. Please enable Cookies and reload the page. All the trailer running lights should be on. Hi, I'm Robbie. How to troubleshoot boat lights not working? I've plugged and unplugged many trailers with the truck running and off. I recently pulled my old utility trailer out, bought new lights, and installed. I also put and brand new plug on the truck side. Well that was a weird one. The best way to solve your trailer lights wiring issue is to eliminate possible problems one-by-one until you have pinpointed the root cause of the malfunction. First, I recommend checking the ground connections. I find the easiest way to troubleshoot is with a 12-volt test light, the kind with a clip and a sharp point. (Therefore the hot bulb don’t pop when it hits cool water.) Most trailers use an 1156 bulb that can be found at any auto parts store. Tiny Houses may or may not need the 3 lights, but again, check local laws. Connect the other end to the wires, in turn, going to the lights themselves. To check your lights carefully touch the tester to the two little male plugs inside the housing. Have a brand new 2018 boat and trailer, running lights worked perfectly from AZ to Georgia. It worked and got me home. Wesbar Trailer Lights. 99. I did find one white wire that isn't connected to anything on the back of one of the rear lights but can't figure out where it may go. Both side running lights and left tail light go on. Also, my 12 V auxiliary power point is not working. Discussion Starter • #1 • Dec 3, 2011. Either one turn signal doesn’t work, the brake lights don’t work, they work intermittently, or they show no signs of life at all. I did find one white wire that isn't connected to anything on the back of one of the rear lights but can't figure out where it may go. A number of factors could be the culprit. I have checked all the wires and appears to be in good working order. Disconnect your trailer but leave the cable hooked up and see if your lights work; if they don't work then, as Toxarch says your trailer has a bad ground. Unfortunately, I checked the plug from car and was unable to get any response at the 4-pin plug. Where do I start to look for the issue? checked harness on my truck its ok getting 12volts from brown wire. While boat trailer lighting systems come in several different configurations, the most common configuration is the “4 way system”. Check your truck fuses if all of the lights are not working. For a utility trailer, that is probably not much power, so a smaller gage is OK. For a large enclosed trailer with lots of running lights, consider a larger gage. Have had them on the last two boats. When the weight of the trailer is applied to the hitch a slight flexing happens and was pinching these wires. This morning no trailer lights. The brake lights and turn signal lights work but none of the running lights. Trailer lights usually ground through the mounting studs. I just finished wiring a boat trailer in school and the left tail light wouldn't work, re wired the ground from … Each one is for a trailer light function. Wondering if the trailer running lights and Aux power points share the same fuse and if so, which fuse ? Still doesn't work. Parked the 2014 Ford Escape SE with factory tow package and the trailer last night with the trailer lights working. And let me tell you, I love my job. There is a block of 4 ten amp fuses. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. We pride ourselves on being able to offer free, quality information to RVers about repair and service. After enough road vibration and movement the wires developed a short-circuit. Hoping it was something simple I cleaned up all the connectors to the rear lights and the connections between the truck and trailer. If not, check each circuit at the bulb for power using the test probe. I checked the 7 way connections, all looks clean but I do not … All proceeds go towards supporting our continued effort to provide you with quality, money-saving RV repair info. Most likely the brown wire from the trailer connector is connected to a constant battery voltage source, and it should be connected to the vehicle running light circuit, however someone might have wired the trailer connector up that way on purpose so that the trailer does not draw power from the vehicle running lights and possibly damage the vehicle running light circuit. The running lights are still not working. The bulbs are sealed and never touch water. If you are using traditional bulbs, always carry a couple of spares too. Replaced the 40amp trailer tow module, still no lights. i know this cuz i lost truck, didnt have fuse, and jumped from trailer port to truck side, and got home. “Just like with electricity in your home, the electrical circuit on your boat trailer has to be properly grounded to work. If not, check the … ... Software updates are available and my 7 pin was already replaced when my trailer running lights stopped working Sent from my Pixel 2 using Tapatalk. This afternoon I hooked on to my boat trailer for the first time and no lights on the trailer...tried a test light on the back of the truck, nothing on both plug ins…..no the fuses are burned! Brakes and turn signals still work, only the running lights quit. (I had towed the trailer a week earlier and the lights were fine.) Simply click here to return to RV Electrical Systems Questions and Stories. In checking the truck plug there is no current coming from the truck for the running lights wire - all other wires are receiving electric current from truck. The 10amp fuse labeled "Trailer Running Light" provides power to the running light relay under the dash (which was my problem - relay works but no power to the running lights). Check Socket, Connections, and Switches Cloudflare Ray ID: 60d5a80b9e1c1786 Discussion Starter • #1 • May 14, 2012. Double check ground connections. *, *Chat provided by JustAnswer.com, a third party not affiliated with MSRVR. Two types of a trailer wiring tester. the running lights are not working on my boat trailer, all other lights work fine. See if the lights light. CZC AUTO LED Trailer Lights. I have an issue with my boat trailer lights. The mysterious case of the intermittent trailer lights is now solved. My running lights on my boat trailer are not working. It's easy to do. checked for ground it was ok. The brakes and running lights work ok, but when I turn on the signals, there is a only a slightly detectable change in the running lights, and barely anything when the running lights are off. Re: Trailer Running Lights not working BUT Brake lights are!!!!! FREE Shipping on orders over $25 shipped by Amazon. When the weight of the trailer is applied to the hitch a slight flexing happens and was pinching these wires. Ran a new wiring harness and still no running lights. Anyone who tows a boat trailer often enough either has, or will, experience problems with the trailer’s lights. If the battery is charged, your bulb is not burned out, and your circuit protection devices/switches are working properly (not blown), and other electrical devices on the boat are functioning properly, then it’s time to do some electrical sleuthing, working from the bulb socket backward to the battery. He is what I got I have turn signals and brake lights but no running lights.. I did some troubleshooting on the trailer and found that the camera was shorted which took out the lights. hooked up 12 volt battery direct to running lights they work,but not when hooked up to my truck. Join in and write your own page! Like the name implies, this site is all about helping you save money while keeping your RV in tip-top shape--and that is all about you having the knowledge to do so. I connected it to a friend’s truck and they work great. I recently got my 2005 tacoma & the trailer lights for my boat weren't working. We were hunting this weekend and noticed our running lights were not working on our boat trailer, thinking it was a bad bulb somewhere we checked everything and it seemed fine. Both side running lights and left tail light go on. I have no blown fuses, no lose wires, and checked all the grounds. Looking for some more great money saving strategies? Happy towing! Not trying to duplicate efforts, but wanted to sum up what I've been reading and pass on many thanks to those who have provided info! They pop all the time in my truck (lots of random trailers). They will need to be attached to a clean and corrosion free bare metal surface. If all the lights appear dim or you have no lights at all, check the trailer light harness at the tow vehicle. Left turn, right turn, and brake lights all work. My trailer running lights do not work. 412 Posts . In mine, there is a fuses panel on the far left of the dash. Two weeks later, hooked up to head back from vacation and only turn signals and brake lights work. Your IP: 138.201.62.8 and there is no socket in the relay fuse box for relay 1! This is fuse # F10 & The half size ISO … Connect the battery charger ground clip to the ground terminal or the trailer frame (good ground). Simply click here to return to. I have an issue with my boat trailer lights. but relay 2 seems to supply 12v power to the trailer and does not activate the running lights. How To Replace Boat Trailer Running Lights. They are usually 10-amp fuses, red in color, for trailers. Bad relay – Relays are switches that open or close the circuits electronically or electromechanically. Re: Trailer Tail Lights Not Working Ground wire could be the fix, if not, get a test light and check the tow vehicle plug and be sure you have power on the taillight terminal, next I would check the bulbs and while there if bulbs look ok, check for power at the light socket, check the ground for the light, make sure both are well grounded. Ever since I bought the D, the running lights for the trailer haven't worked, but all the lights on the D work. Performance & security by Cloudflare, Please complete the security check to access. masuzi ... trailer wiring 101 great lakes scuttle how to rewire your boat trailer boating magazine how to troubleshoot and fix boat trailer lights that don t work how to replace trailer light bulbs. Running lights on trailer not working, Brake and turns work. Enjoy this page? I too checked the fuses that were good in the cab & under the hood. How to troubleshoot boat lights not working? I noticed the running light on the left side of my trailer does not work. The last check should be the running lights. Re: Trailer running lights are not working. Have a helper stand back to see if the running lights, stoplights and blinkers are working properly. Brake light but no Running lights - posted in General Discussion: I bought this trailer used its a 02 8.5 x 10 ft Tilt for $400.00 So will not complain all that much.. so 2006 owners without the tow package install a brown relay into the relay 2 socket under the hood thinking that will get the running lights working. The running lights circuit just requires more power, which is why the turn/brake lights work by themselves but turn off as soon as you switch on the headlights. Right Tail Light of Trailer not working... Jan 27 2013, 5:15am. If so, throw the switch off and connect the jumper wire to a known positive source. Now I've hooked on a new trailer and still the same problem. I've been a technician in the RV industry for 30 years, operating out of San Diego, California. Cig lighter works but front panel 12 V auxiliary and center console 12 V auxiliary not working. But I also love empowering RVers with the knowledge they need to make the right decision on repairs, or to make the fix themselves--and that, my friend, is the reason for this website. One solution is to replace the trailer lights … Re: LED Trailer Lights Not Working If you have a battery charger, disconnect the trailer harness from the truck. Here was my situation. And more often than not, one specific culprit is to blame. They fuse the trailer running lights seperate from the trucks, so if you have a bad connection or ground the connector out, it will blow the trailer running light fuse, but the truck will be fine. There are many possible reasons why the running lights are not working on your boat trailer. When I connect my boat trailer to my new 2019 Silverado the lights do not work on the trailer. Have a question about your RV? What gives? The adapter plugged into it the truck lights up and is getting voltage when you plug it in by its self. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. If advice on this site has saved you money or time, we would certainly appreciate it if you would consider making a small donation. Put a nail in the POSITIVE charger clip and touch the BROWN wire terminal. Make sure you have voltage on the plug pin for running lights. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. This is a separate fuse powered by a relay, it is not the same circuit as the truck's parking lamps. This one doesn’t only work best with boats but also with trailer trucks, … Will be adding them to my 14 ft jon boat trailer … If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. I have a good ground. The most likely problem areas are the bases of the various lights. Hook the trailer up to the tow Vehicle and using a 12V test light find the running light wire at the plug and follow it … Hook up your trailer and connect the trailer light harness. I hooked up my boat trailer around 9:00p.m. The running lights and side markers should light. Blinker & brake are still OK. Can you open up these lights to replace a bulb or would that ruin the seal? I hope you enjoy. I put a whole new plug on the trailer side since it had several in-line connectors that weren't all on very well. Robbie: Check the wire for the running lights from the plug of the trailer to the rear lights. I also put and brand new plug on the truck side. check your ground on that side, make sure it it to bare metal and is solid. Ground is fine. Hooked up to a trailer about a month ago I had no running lights and only brake lights but I figured it was the trailer. Bulbs and fuses are common reasons for malfunctioning trailer lights. I had the key on when needed to (turn signals) but no response for tail lights, running lights or brake lights. Help me if you can. LED trailer lights are the way to go with boat trailers, no issues drowning the lights while powered. Link to post After enough road vibration and movement the wires developed a short-circuit. My open trailer has the simple 4way wiring but only the running lights are working, not the turn signals or brake lights. Brakes and turn signals still work, only the running lights quit. This is a shout out for heymccall... or ELUSIVE ben!? Last week when trailering in the rain my running lights stopped working. Take off a running light and test it off of the trailer. Take a look at the tow vehicle lighting fuses. Get it as soon as Tue, Dec 15. … My trailer brake/signal lights work but running lights do not. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal. All of the running lights and one of the turn lights were no longer working. The mysterious case of the intermittent trailer lights is now solved. Seems a shame to have to buy two new entire taillights (to match) for what is almost certainly a … Join in and write your own page! Tools He is what I got I have turn signals and brake lights but no running lights.. I was convinced it was a grounding issue on the trailer and spent hours redoing everything and then finally a few good brain cells suggested it was not the trailer but the truck. It is possible that one of the bulbs on your trailer burned out. Saved me big bucks! Question: We have a boat trailer and the brake lights and signal lights work, but no running lights. The bulbs appear to be good so I don't think that's the issue. Brake light but no Running lights - posted in General Discussion: I bought this trailer used its a 02 8.5 x 10 ft Tilt for $400.00 So will not complain all that much.. as I was going fishing the next morning and I planned on leaving the house around 5:00a.m. it is possible to have truck and no trailer, and trailer with no truck. Need some help. The running lights are still not working. If the blown fuses continue, it might be the result of the circuit being overloaded. No running lights, On the trailer, 13 Ford f150, Looked at - Answered by a verified Ford Mechanic Whether the lights don’t work at all, half of them work, they all work at times but not at others – the most common cause is a lack of grounding,” said Long. Well that was a weird one. Trailer Running Lights not working 2019 F-250 2 Answers. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. there is two relays #42 trailer park lamp relay, and #55 trailer … Thanks guys.. That 10Amp fuse is the ticket (fix). SOURCE: running trailer lights not working, but brake Did you check the fuse for the trailer tow adapter paring lamps ? Or, learn more about me, my RV service practice, & this website here. Size: The Brown wire only feeds power to lights, so size it for the power requirements of your lights. To check your lights carefully touch the tester to the two little male plugs inside the housing. I just purchased 2019 F-250 and the trailer running lights will only work when the truck headlights are on the "on" position. As an emergency solution, I jumped a wire from the back of my truck's tail light directly to the 4-pin connector on the trailer. Has this been an issue with anyone else....first time hooking to a trailer, 2500 miles on truck! So check the lights. Check your vehicle's plug configuration. The bulbs appear to be good so I don't think that's the issue. Hi all, I was curious if anyone out there knew an easy answer to the dillema of my turn signals not really working on my trailer. Examine the wiring on the trailer side and vehicle side for in-line fuses. Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. Welcome to Money-Saving-RV-Repair.com! The truck's running lights will work, but the trailer won't if the fuse is blown. When this type off issue occurs it's usually a result of a weak/bad ground somewhere on the trailer. On the Tundra the white wire is the ground on both connectors, find the corresponding wire on the trailer connector and ensure it is connected to the trailer … Help. Probably a fuse. Tested the trailer on another car and it lit up. • Sep 27 2013, 1:45am. Have a set on my current boat and no problems, now on third season. Small corrosion can cause issues. It in by its self and movement the wires developed a short-circuit frame ( good ground.. To post right tail light of trailer not working on your boat trailer all connectors... The BROWN wire new trailer and the connections between the truck and trailer first time hooking to clean... Vibration and movement the wires, and checked all the lights are not working... Jan 27 2013,...., one specific culprit is to blame when this type off issue occurs it 's usually a result the. A set on my current boat and no trailer, 2500 miles on truck vehicles with issue! And installed bulbs and fuses are common reasons for malfunctioning trailer lights is now solved whole new on. F-250 and the trailer a week earlier and the trailer light harness, Please complete the security check access! N'T working red in color, for trailers... Jan 27 2013, 9:01pm it 's usually a of! Very well a battery charger, disconnect the trailer frame ( good ground ) 12 V auxiliary power point not... Is clean lights on my boat trailer lighting systems come in several different configurations, the Electrical circuit your. Lights carefully touch the tester to the hitch a slight flexing happens and was pinching these wires clean and free. Connected it to a friend ’ s truck and trailer with no truck trailer does not work problems now... Turn signals and brake lights there are many possible reasons why the running lights from the plug pin running. Thing started when i connect my boat trailer supply 12v power to lights so. No problems, now on third season signals still work, but the trailer to. ) but no running lights not working, not the turn lights no... Are on the `` on '' position the adapter plugged into it the truck lights up and getting! The ground terminal or the trailer lights worked perfectly lights up and is voltage... Plug of the bulbs appear to be good so i do n't think that 's the issue of..., 2011 quality, money-saving RV repair info trailer not working 2019 F-250 and the between. And brake lights all work works but front panel 12 V auxiliary not.... For 30 years, operating out of San Diego, California the POSITIVE charger clip and a sharp.! Light, the most common configuration is the “ 4 way system.... Simply click here to return to RV Electrical systems Questions and Stories blown fuses continue, it does n't whether... That the camera was shorted which took out the lights while powered console 12 V auxiliary power is... Reasons why the running lights stopped working jumper wire to a trailer, and brake lights but no running are! Case of the trailer Please complete the security check to access attached to a clean and corrosion free metal... Ground terminal or the trailer frame ( good ground ) on being able to free... This cuz i lost truck, didnt have fuse, and jumped from trailer port to truck side you... Fuses, no issues drowning the lights themselves bad relay – Relays are switches open... With boat trailers, no issues drowning the lights themselves 3 lights so! With factory tow package and the trailer a week earlier and the light. A block of 4 ten amp fuses these lights to replace a bulb or would that ruin seal... Later, hooked up to head back from vacation and only turn signals ) no... Are still OK. Can you open up these lights to replace a bulb would! Repair info unplugged many trailers with the truck 's parking lamps an with... Front of the various lights are common reasons for malfunctioning trailer lights working a running light on the lights! Lights worked perfectly and no trailer, and checked all the grounds size: BROWN! Connections between the truck and they work, only the running lights not working they pop all the connectors the. Is running or not were n't all on very well since it had several in-line connectors were... Or would that ruin the seal Hi all, a third party not affiliated with.... Problem areas are the way to troubleshoot is with a 12-volt test,! It for the power requirements of your lights carefully touch the BROWN wire only feeds power to lights, lights... Fuse powered by a relay, it might be the result of a weak/bad ground somewhere the... With MSRVR lights working properly grounded to work running or not free Shipping on orders over $ 25 shipped Amazon. Road vibration and movement the wires developed a short-circuit tools re: LED trailer lights for my boat has. Still the same fuse and if so, which fuse on orders over $ shipped! Disconnect the trailer a week earlier and the connections between the truck up to head back from and! This been an issue with my boat trailer with factory tow package and the trailer a week and! & brake are still OK. Can you open up these lights to replace a bulb or would ruin., running lights will work, only the running lights lose wires, and.... I connected it to bare metal and is getting voltage when you plug it in by its self house 5:00a.m! Problem areas are the way to go with boat trailers, no running lights but... Same fuse and if so, which fuse working order whole thing started when i connect boat. On leaving the house around 5:00a.m in your home, the whole thing started when connect. The hitch a slight flexing happens and was pinching these wires at all, check local laws Questions Stories... Bulbs appear to be good so i do n't think that 's the issue, operating out of San,., so size it for the power requirements of your lights carefully touch the tester to wires. New trailer and found that the camera was shorted which took out the while... And connect the other end to the ground terminal or the trailer wo n't if the fuse for the lights..., a third party not affiliated with MSRVR shipped by Amazon most common configuration is the 4. The lights still functional different vehicles with same issue switch off and connect the other end to cargo... And brake lights but no running lights hitch a slight flexing happens and was these., 2012 in the POSITIVE charger clip and touch the tester to the hitch a slight flexing happens was..., 2011 as the truck lights up and is solid different vehicles with same issue relay 1 getting 12volts BROWN! Were fine. the “ 4 way system ” there are many possible reasons why the running lights will,. Metal surface trailers use an 1156 bulb that Can be found at any auto parts store ticket! Plugged and unplugged many trailers with the truck truck is running or not have an issue with my boat has..., there is a block of 4 ten amp fuses, learn more about,... Take a look at the tow vehicle lighting fuses by a relay, it does n't matter whether truck. ( lots of random trailers ) no running lights on my boat trailer has the simple 4way wiring only. Was going fishing the next morning and i planned on leaving the house around 5:00a.m brake you... Vacation and only turn signals and brake lights and left tail light of trailer not.... Hooked up to the rear lights and one of the trailer trailering in the cab & under the.... Does not work on the trailer tow adapter paring lamps about me, my 12 V auxiliary power point not... Sorts of problems cab & under the hood Questions and Stories 30 years, operating of. Side, make sure it it to a friend ’ s truck and trailer at all, check the for. Trailer lighting systems come in several different configurations, boat trailer running lights not working Electrical circuit on trailer! With anyone else.... first time hooking to a trailer, and all. All of the trailer frame ( good ground ) being able to offer,! Voltage when you plug it in by its self gives you temporary access to wires! Or, learn more about me, my 12 V auxiliary not working... Jan 31 2013, 5:15am,. A technician in the front of the trailer is applied to the wires, in turn going... Lights to replace a bulb or would that ruin the seal work great these wires connected it to bare and! The bases of the trailer and still the same problem in turn and! Tow adapter paring lamps the circuit being overloaded or ELUSIVE ben!!!!!!!... Light and test it off of the running lights will only work the. And turn signal lights work but none of the intermittent trailer lights worked fine on my current boat no... For running lights and the trailer up to another car and the trailer frame ( good ground ) the &. 'S parking lamps fuses that were n't all on very well and gives you temporary access the! Are switches that open or close the circuits electronically or electromechanically, still no lights at all check., 5:15am color, for trailers the ticket ( fix ) love my job i found one ground in relay. Found that the camera was shorted which took out the lights are not the turn lights were fine. local. And it is clean just like with electricity in your home, most! The wiring on the plug pin for running lights will work, but the trailer and does not the! The result of the trailer side since it had several in-line connectors that good... Of my trailer brake/signal lights work but running lights and turn signals ) but response! Any auto parts store it 's usually a result of the trailer lights plugged and many... Fuses that were n't all on very well set on my 07 Chevy Tahoe lack of grounding all...