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By adding a single wire to the BCM under the dash on the driver's side (at least in the 2016 and 2018 HD trucks) you can get the side mirror cargo lights to turn on whenever the truck is in reverse (when the truck is running) or the cargo light switch is turned on (when the truck is turned off).


You need to run a wire from pin connector 26 on the Brown BCM block to pin connector 26 on the Pink BCM block (see picture).


Following are some pictures of the amount of light put out with this mod.








20180801_210107 (Medium).jpg

Edited by grandpalarry777
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