I have read a lot on the forum about adding a brake controller. (1995 Silverado) I also have the wires taped on the cross member in the rear of the truck. It has 5 wires.
1 heavy white wire
1 yellow
1 brown
1 green
1 lime green

any schematic available to wire this with a 7 prong plug for trailer brakes?
I guess they but the wires for easy hook up... thanks

 

this is from the 1997 Tahoe factory manual... give it a try

 

here is one