LED Trailer Lights Help Please

[makes1]

The tail light, brake light , blinker lights on my trailer were old & corroded , I bought a new set of LED lights and installed them . The Brake lights and turn signals do not work , I made sure they were grounded properly and even Hooked my boat to the Reese hitch for added ground . Checked my connections , polarity all was good . Anyone have any idea what my problem is ? I'm not familiar with the LED's but heard they last longer

 

[MonacoMike]

LED's are great. Have you checked the lights themselves to be certain the work? The connections from the truck? If both are good it is the trailer wire.MM

 

[JerryS]

Check the polarity again. If it is not correct, they will not work.

 

[Lazy Daze]

How do the LED's you have ground? Is it a self grounding fixture, or is there a white lead?

I added LED's to my trailer and they were self-grounding. I dealt with various lights not working for a year and a half. I would clean the trailer where they made contact, move them around a little and re-tighten and they would work... for a little while and then they stopped working. I just couldn't get them to make (and keep) a good ground contact between the light base and the frame. I finally took them apart, soldered in a short lead, crimped on a ring terminal and screwed the lead directly into the frame. All has been good, now.