Trailer Wiring Harness - Chevrolet 2002 Astro Owner's Manual

Trailer Wiring Harness

If you have the optional trailering package, your vehicle
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will have an eight wire harness, including the center
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high mounted stoplamp battery feed wire. The harness
is stored on the passenger's side of the vehicle near the
rear wheel well. This harness has a 30 amp battery
feed wire and no connector, and should be wired by
a qualified electrical technician. After choosing an
aftermarket trailer mating connector pair, have the
technician attach one connector to the eight
harness and the other connector to the wiring harness on
the trailer. Be sure the wiring harness on the trailer is
taped or strapped to the trailer's frame rail and leave it
loose enough so the wiring doesn't bend or break, but
not so loose that it drags on the ground. The eight
harness must be routed out of your vehicle between the
rear door and the floor, with enough of the harness left
on both sides so that the trailer or the body won't pull it.
If you do not have the optional trailering package, your
vehicle will still have a trailering harness. The harness
is located near the passenger's side rear wheel well.
It consists of six wires that may be used by
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after market trailer hitch installers.
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The technician can use the following color code chart
when connecting the wiring harness to your trailer.
D
Brown: Rear lamps.
D
Yellow: Left stoplamp and turn signal.
D
Dark Green: Right stoplamp and turn signal.
D
White (Heavy Gage): Ground.
D
Light Green: Back
D
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wire trailer
White (Light Gage): Center High
Stoplamp.
D
Blue: Auxiliary circuit (eight
D
Orange: Fused auxiliary (eight
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wire
Store the harness in its original place. Wrap the
harness together and tie it neatly so it won't
be damaged.
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up lamps.
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Mounted
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wire harness only).
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wire harness only).