I have a 2014 GMC 3500 HD. It has the Snow plow prep package with the light switch instead of the garage door switches in the overhead panel. I have three questions about this.

How does the light switch in the overhead panel get hooked up to a light?

Can the light switch be unplugged and have the garage door switches rehooked up (if I can find the numbers for the switches)?

How can you get rear fog lights hooked with this package?

Thanks,
Tim