Hmmwv electrical problem

[luke2pl]

Changed out all the side markers and lights in my Hmmwv to all new lights.

My driver side tail light was working originally fine but rear markers were not. Found a bed ground on the markers and they seem to work fine however now the driver side tail light does not work at all. #21 wire is getting power. Passenger light works fine without any problems.

All the lights were purchased from mid west military.

 

[NDT]

What mfgr is the lamp? Most need good ground on both mounting screws.

 

[Guyfang]

Its not called out in the TM, but we always used serrated washers to insure a proper ground. And made sure everything was clean and use a bit of sand paper to ensure metal to metal contact.