Quote:
Originally Posted by bigcountrysg
Those are for the trailer brake system. When you add a Trailer Brake Controller you will use those wires. Under the dash they should have a connector on them. When you bought your truck. If you bought it new from the dealer. You should have gotten the other end of the connector. So you can add a brake controller with out cutting into the harness.
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ive got the brake control ones as well and they do have a plug these are different they are customer access wires and are marked as such but cant find anywhere what each one does i know the green one must have some kind of tach signal to it because thats where the tach wire to my remote start is hooked