2001 GMC Yukon Owner's Manual - Page 266

2001 GMC Yukon Manual

Page 266 highlights

Heavy-Duty Trailer Wiring Package (If Equipped) The seven-wire harness contains the following trailer circuits: D D D D D D D Yellow: Left Stop/Turn Signal Dark Green: Right Stop/Turn Signal Brown: Taillamps White: Ground Light Green: Back-up Lamps Red: Battery Feed Dark Blue: Trailer Brake Your vehicle is equipped with the seven-wire trailer towing harness. This harness with a seven-pin universal heavy-duty trailer connector that is attached to a bracket on the hitch platform (if equipped). A jumper harness for an electric trailer brake controller and a trailer battery feed fuse are included with this trailering package. (See "Instrument Panel Jumper Wiring Harness" later in this section.) If you need to tow a light-duty trailer with a standard four-way round pin connector, an adapter connector is available from your dealer. 4-63

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