Stumped with my M101A1 Lights

[hoffy85]

I recently stripped down my M101A1 trailer to clean it up and do some work on it. I took all the old wiring out, put all new 16 gauge wiring in and double checked my work. I have issues with my lights. The brake lights won't come on and when I put 12 volt bulbs in the different sockets they light up doing different functions. I wired in two wires for each light, one for the brakes and turn signals, and a second one the running lights. I capped the wires for the black out lights. My next idea was replacing the lights with new ones. Does anyone have suggestions for me at all?

Thanks!

 

[DeadParrot]

Double check the grounds. If the fixture has lost its ground, the current can go back through the 2nd filament in a dual purpose bulb, depending on the tow vehicle. The running light will be near full bright and the brake light will be dim. Best way to test troublesome trailer lights is with a stand alone battery or charger. Only connect ground and the light circuit under test.

 

[doghead]

Both mounting bolt need to be grounded.

 

[doghead]

What bulbs did you use?

1156 & 97 or 67 ?

 

[hoffy85]

I put both 1156 and 97 bulbs in. Both bolts are tightened into the back of the lights. I still have the problem.....pretty frustrating.

 

[doghead]

Did you reuse star washers?

Use a meter and test both sockets for goon ground to the frame.

You did ground your plug to the frame as well, right?

 

[hoffy85]

Yes, I did reuse the same star washers. Should I get new ones? Yes I also ran a separate wire from the plug to the frame for a ground.

 

[doghead]

Test each socket to your ground terminal of your new front plug.

 

[John Galt]

Had this issue. I removed the light mount brackets then removed paint from the bracket and frame so the bracket and frame were grounded.

 

[glassk]

ground straps on the inside