Chevrolet 2000 Express Van Owner's Manual page 214

Trailer Wiring Harness
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The optional heavy duty trailer wiring package is an
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eight wire harness assembly. The five
the harness assembly is stored under the vehicle, along
the driver's side rear corner of the frame rail. The
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three wire portion of the harness assembly is stored
in a frame pocket under the rear of the vehicle, on the
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driver's side. The heavy duty trailer wiring harness has
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a 30 amp feed wire. Both harnesses come without
connectors and should be wired by a qualified electrical
technician. The technician can use the following color
code chart when connecting the wiring harness to
your trailer.
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Five Wire Harness
D
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Light Green: Back up lamps
D
Brown: Parking lamps
D
Yellow: Left stoplamp and turn signal
D
Dark Green: Right stoplamp and turn signal
D
White (light gage): Center high
4-42
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wire portion of
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mounted stoplamp
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Three Wire Harness
D
Dark Blue: Use for electric trailer brakes (eight
harness only)
D
Orange: Trailer accessory (eight
D
White (heavy gage): Ground wire
Securely attach the harness to the trailer, then tape or
strap it to your vehicle's frame rail. Be sure you leave it
loose enough so the wiring doesn't bend or break, but
not so loose that it drags on the ground. Store the
harness in its original place. Wrap the harness together
and tie it neatly so it won't be damaged.
yellowblue
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wire
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wire harness only)