Does anyone know how many wires a 2004 Blazer brake switch has and it's location?

I am installing a brake control. I looked up at the brake pedal and I saw a plug attached the brake pedal near the top. It has alot of wires to it. It is so tight up there I could not see above it. Is this the brake switch or is the switch located higher up the brake pedal?


Also what's the best way to run wires from under the dash to the engine compartment? I don't see any holes in the fire wall to run the wires through and I don't want to start drilling holes.


Thanks for all your help

Jim

 

It is just a plunger switch, probably at the top of the brake pedal arm.