Driver Side Trailer Side Marker Light Does Not Light Up

Question:

Hello my LH side marker does not work but my RH Does i bought new led lights from your company so i know it is not the bulb. can you please help me? thank you

asked by: Ray H

Expert Reply:

It looks like you have the Sealed, Miro Flex, Mini Thin Line LED, # AL191AB. What I think is happening is that there is a bad ground connection. The bracket you are using, # A91BB, has a ground transfer that moves the ground from the terminal in the back to the mounting hole.

Check to make sure that the bracket is secured to a bare metal surface that is free of dirt and corrosion. You may try grounding the terminal using a wire instead of through the mounting hardware to get a better connection.

To make sure it is not the light malfunctioning, you can use a wire to ground it from one of the terminals in the back to a sturdy ground and then use the other terminal to attach to the positive battery terminal on a vehicle. If it lights up that way, it is most likely a ground issue on the trailer side.

expert reply by: Michael H