creative concepts
+1y
the brake light would be on the brake light switch. If you wanna tie into them together, look at the bulk head on the firewall.
you will really need a wiring diagram, unless you wanna follow it from th eback up to the bulkhead.
I cant remember if they are like s10's or not, but if they are, firewall side is 2 wiring harnesses plugged into the main.. 1 is strictly fuel pump, taillights, reverse and brakes. that is a place to do it there too.