Amber side marker lights crazy

[Stumpknocker]

Just installed a complete LED trailer kit. Everything works great except the two side marker lights. When I step on the brakes they go out. When I use turn signals they flash off as the tail lights flash on. I have a ground wire from each tail light to the frame in addition to one at the front attached to the frame behind the coupler. Any suggestions?<br /><br />I used a multi-meter to ascertain which wire was hot when wiring up the side marker lights. With the tail lights on, they worked. So I connected them and sealed them with the dielectric type dope. Getting frustrated.

 

[rcp1025]

Re: Amber side marker lights crazy

I had the same problem a few months back. It turns out my vehicle connector wasn't grounded good. I cut the ground wire running from the trailer plug to the vehicle wiring harness plug, put a 5/16" round connector on it and attached it to a bolt on the bumper. Problem solved by establishing a good ground from the trailer system to the vehicle system.

 

[Stumpknocker]

Re: Amber side marker lights crazy

Thanks, but I already did that. Both on the bumper and on the trailer itself in 3 places. I think the ground is covered, thats why its so frustrating.

 

[Dunaruna]

Re: Amber side marker lights crazy

I know you've covered this but it does sound like a ground issue. Using an OHM meter takes all the guess work out of whether or not your ground connections are good. <br /><br />Aldo

 

[Bondo]

Re: Amber side marker lights crazy

I know you Think you've got it covered,<br />But,<br />You've Still got a Ground Issue................

 

[bomar76]

Re: Amber side marker lights crazy

Ditto.<br />It's a ground problem.

 

[Stumpknocker]

Re: Amber side marker lights crazy

Ok, back to square one. I have an ohm meter.

 

[NYMINUTE]

Re: Amber side marker lights crazy

Try a secondary ground in both spots, use a wire with alligator clips, and try other ground areas until you hit one that will turn them on. If not, then check the wiring again.

 

[Stumpknocker]

Re: Amber side marker lights crazy

Will try that as well. Thought I might remove the connectors and solder the wires at the point in question as well.

 

[Stumpknocker]

Re: Amber side marker lights crazy

Success!<br /><br />Even though the quick connects were firmly closed and making contact, when the ground wire was tested in a secondary spot as suggested by NYMINUTE, everything settled down and worked properly. Would have wagered the farm on those connections. You never know I guess. Everyone was correct. Thanks for the input. Now to go dunk em in nice salt water.

 

[Realgun]

Re: Amber side marker lights crazy

Ha I bought a new to me used truck and I hooked up the boat to check the lights to be sure the truck was working properly. Not a darn light worked. Checked plug got 1 turn signal. Fixed the two burned fuses on truck no help! It ended up being the ground on the trailer! And I had just installed these new lights and they functioned fine on the other truck. It might have been when I pulled away from trailer and forgot to unhook lights you think?