Thought I would post some pics and an update on the fog light wiring.
As you can see from the pics I chose to add switches in the overhead console. This came before I even knew about the upfitters switches. I never though a car/truck company would have done this. After checking with GM service they gave me an OK on not having any problems or issues tapping into the low and high beam circuits. They even complimented me on a very neat and clean install afterwards.
Everything works: the aux fog lights go out when the high beams are on. The other switches are for trailer rear spot lights and bed lights. The acc switch was installed in case I wanted to wire something in later because the wiring for all this was a bit of a pain. All switches are fuse protected and ran through relays.
The extra ground wire that's hanging isn't needed but I left it in there for future use. It's all a tight fit but it all goes in there. There's plenty of room above the headliner for the relays and fuse holders. I did not need to drop the headliner, I just fed them into the open space. All power came directly from the battery.
