MILO Posted January 26, 2006 Report Share Posted January 26, 2006 (edited) i've had a problem with my trailer lights for some time now and i figured lots of guys haul their quads and may know something about this. basically, the brake lights work fine when the vehicle lights are off. all the lights work fine when the vehicle lights are turned on. BUT... with the vehicle lights on, when you hit the brakes then the left light goes out instead of getting brighter, but the right side brake light lights up. also, with the 4 ways on, the left and right lights alternate rather than blinking together. it's not in my vehicle wiring cuz i hooked up to my dad's new trailer and everything works fine. this should be pretty simple. a brown wire(marker) and a yellow wire(left turn) should go the the left side, brown and green to the right. the brown from the left also branches to the marker lights on the ctr rear of the trailer. and that's how it's all hooked. so why the hell won't it work!! all i've ever done is replace the entire left light assembly with a new one, and wired it up the same as i unhooked it. all the bulbs are fine, i've tried interchanging them and using new ones and still have the same problem. any ideas?? Edited January 26, 2006 by MILO Quote Link to comment Share on other sites More sharing options...
_Redline_ Posted January 27, 2006 Report Share Posted January 27, 2006 Its the ground wire it always is, Trailer lights can be a real pain .Start by cleaning the plug for the trailer. Then go on to to the ground wire that is usualy attached to the tonge of the trailer somewhere if that don't work remove the tail lights and clean where they bolt on. Quote Link to comment Share on other sites More sharing options...
scuba147 Posted January 27, 2006 Report Share Posted January 27, 2006 I am with redline--always a ground issue with mine also. If they are the square ones made i think by peterson it seems like i have to replace the whole assembly every year or so. Our boat trailer lights was a real pain till i got some at pep boys that were of good quality--have not touched a light in 6 years--rectangle submergable ones--they are going on my quad trailer next time i have a problem Quote Link to comment Share on other sites More sharing options...
MILO Posted January 27, 2006 Author Report Share Posted January 27, 2006 this is like pissing with Christmas lights... yeah, they are the peterson square jobbies. this one is probably only about 6 months old. i've already replaced the wiring from the junction box on the tongue and the plug just today. my dog chewed my old one off and left nothing but frayed bare wires hanging. also chewed up the plastic handle on the jack. anyway, the ground on the tongue is under the screw clamping the wire at the junction box. maybe i'll drill and buff a hole to try just mounting to the tongue itself. i didn't think about where it mounts to the trailer though, i'll have to try that. thanks guys. Quote Link to comment Share on other sites More sharing options...
MILO Posted January 27, 2006 Author Report Share Posted January 27, 2006 (edited) ok, i've moved the ground to directly on the tongue, double checked all the wires for cracks, bends, open/bare wire etc, tried a different light fixture, tried my dad's trailer again(which works fine), replaced the connectors/junctions leading to that light assembly, and cleaned up where the light fixture mounts... i don't understand why everything works fine with the vehicle lights off, and is all funked up with the vehicle lights on. yet the vehicle has no effect when hooked to another trailer. Edited January 27, 2006 by MILO Quote Link to comment Share on other sites More sharing options...
MILO Posted January 28, 2006 Author Report Share Posted January 28, 2006 FINALLY-SUCCESS!! it turns out it was still the ground quality where the light mounts. i redrilled and reamed the mounting holes in the bracket, and took the light bolts to the wire wheel hooked it back up and whoohoo, i'm back in business. must not have got it clean enough the first time around. i was about 5 minutes from just running new wires, lol. Quote Link to comment Share on other sites More sharing options...
scuba147 Posted January 29, 2006 Report Share Posted January 29, 2006 glad you got it fixed--i would replaced the fixtures next time something happens--they are a piece of shit Quote Link to comment Share on other sites More sharing options...
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