Welcome! Since your Wildtrak already has the factory aux switches, I’d just wire the S1s directly to one of those circuits. Run the wiring cleanly along the TrailRax rack, use weatherproof connections, and match the fuse to the light’s draw. It’s a simple setup and gives you full control of the...
I run an OpenRoad 270 with a rooftop tent, and they work well together as long as you have enough clearance for the awning to swing open. With a GOBI rack, you’ll most likely need the GOBI-specific mounting brackets. Just make sure to position the awning so it doesn’t interfere with your RTT...
I think you should be fine. The only potential concern is when removing it later, as the adhesive could pull up or damage the wrap. As long as the wrap is properly installed and the surface is clean, adhesion shouldn't be an issue.