jeffd

What gauge are the 5 wires (4+1)? Want to get to run same time as power cable.

Besides the obvious, are there other mechanical differences? Do the 17" vs 20" wheels create a different ratio? Does the DRW have bigger brakes? Anything different with the axle? What else?!

I will study the upfitter docs, thank you!

My 2020 3500 LTZ has dual alternators and aux battery (and plow package). Help me understand (or point me) a few questions. What do each of the alternators do/charge? Do they work independently or supply sum charge to both batteries? Is one of the batteries always used for starting? Is the other aux only? Are they isolated like a normal aux battery set up? Just looking for an overview of what they do, why and how. Thanks, Jeff

I really appreciate both your comments. I learned a lot and was reminded... start simple. The lockout switch was on. Jeez...

The lock-out switch is a great thing to assess, thank you.

Drivers switch cluster nor switch at rear window will operate the window. Switch has power but none of the other wires show power when I operate the switch. I figured switch! But when I apply 12v to either motor terminal it doesn't go up or down. See video. Possible motor and switch are bad? I'd appreciate some input/advice! Vid of my diag efforts