Jason Gaffney

I have a 2019 RST. Installed Spec-D tow mirrors from Real Truck. Power adjust worked immediately, mirrors have heat option but my truck does not. The puddle lamps, reverse lamps, and amber marker lamps do not work. However, the marker lamps partially illuminate very dim at all times. They won't shut off on the truck until after several minutes of sitting. I have seen the boost auto harness that supposedly connects the reverse lamps to your bed lamp button (which I have) but haven't attempted to purchase/install because I don't know if it works with non boost mirrors. Should I be considering GM harnesses instead to get the lights working. I've seen quite often there's a dramatic difference between 2019 and 2020+ wiring.