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Old 02-05-2014, 02:20 AM   #122
C20scott
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Join Date: Oct 2011
Location: antioch, ca
Posts: 158
Re: Backyard Cummins

The NV4500 reverse switch pigtail is the same between GM and Cummins transmissions. Part # is 12085485, and should cost less than 10$. It is a dual prong male connector, with a notch on one of the prongs. Allows current to pass through to your reverse light..

Hopefully this saves someone a few hours of research.
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