2019 2604 WS issues
Running lights: Two things to try 1) see if the lights work at the trailer side by using a blade fuse to jump the running lights pin and the 12v pin on the trailer end of the 7way connector. Pic attached
. If they light up then. It is your tow vehicle or the connector pin may be dirty/corroded on either truck side or trailer side.
If they donít light up then 2) check the wire in the junction box (maybe behind propane tanks mounted on the frame) that connects the opposite end of the 7 way plug to the trailer. I had a wire nut come off once in that junction box and my lights did not work.
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