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Tow Bar Wiring Installation on 2015 Chevy Silverado 4X4

Question:

Hooked motorhome wires to the top bulbs of the PU. Everything works as it should in checking all lights with PU standing alone. When connecting to the F-450 motorhome 4-pin adaptor flat only the top bulbs on the PU work as they should, tail lights, turn, stop. The bottom bulb on each side does not light in any case. Where did I go wrong? 2015 Chevy Silverado 4X4

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Expert Reply:

The Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 has a separate wire for that lower light. It is working as intended. I've attached a video to show that correct function with this wiring kit.

If you want to connect those lower bulbs, you can use another Roadmaster Hy-Power Diode # RM-790 on each side and tap into your signal.

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