wiring diagram

[bilcal]

I am searching for a wiring diagram for an Avalanche 345tg.
I wish to put a plug on the rear bumper, 4 pin. The info in the owners manual, does not match the wire colours at the rea of the unit. Is there a better diagram with correct wiring codes.

[JRTJH]

Do a forum search for wiring diagram, You'll find one, but it probably won't do you much good... Keystone doesn't share that information with customers :(