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Old 03-16-2011, 07:53 PM
75gmck25 75gmck25 is offline
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You can get the basic four pin trailer hookup using a T-One adapter that plugs into your wiring behind the back bumper.

The four wires are for:
Right Turn
Left Turn
You will probably also have to switch to a heavy duty flasher for the turn signals.

To get the other three pins (including brakes) you need:

Black wire - constant 12 volts to power the trailer or trailer battery
Blue wire - trailer brake activation
Purple wire - backup lights

This site has some useful diagrams.

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