Do Converter Boxes on Trailer Wiring Harnesses Ever Go Bad

Question:

Does the trailer light power module ever go bad.Checked all wiring and tested okay.cannot get right signal,,,brake and parking light to work.Parking light and left signal okay.

asked by: Paul

Expert Reply:

Converter boxes like what is on the Tow Ready Wiring Harness # 118349 can short out. Actually if there's a short on the trailer wiring they tend to short out pretty frequently. If you tested the input side of the box and the voltage is there when it is supposed to be, but on the output side of the box the voltage isn't there then it has shorted out and would need to be replaced.

I attached an FAQ on troubleshooting 4-ways for you to check out also.

expert reply by: Jameson C