I've got an 08, I was wondering where the best place was to bring a wire in to my switch from the engine compartment.

 

There's a hole through the firewall on both sides behind the upper dash vents near the doors. Just pop off the side panel and you'll see it (you'll need to poke a hole in the foam with a screwdriver or wire hanger).

Here's a write up on how to run wires for lights:

https://www.jk-forum.com/forums/show...light-solution

 

If your JK is an automatic, there is a nice big port through the firewall next to the brake pedal. It has a rubber membrane you can poke a wire through.

 

Thanks, mines a 6 speed, found the hole by the door. Worked great!