Z1500

On my 2020 2500HD the trailer B+ charging wire is hot all the time. Did GM leave us a nice easy way to change that to be switched with key on?

The set I got had no broken tabs so I'm not sure.

On my 2020 HD, anybody know? Specifically the rear section and 'cooling tip'. Is it stainless or aluminized?

I did see that harness available. But I don't mind cutting my wires and adding my own relay and resistor. Just need a schematic or a little help to see how the LTZ are wired.

I just installed the 2020HD LTZ headlights in my LT ($600ea. off ebay). I was hoping everything other than the DRL's would work just plugging them in. NOPE. The only lights that work are the amber bulbs. Anybody have the pinout for the LTZ's and what wires do what.