Generally if your model has that option available, the harness includes the plug=ins. Look for them tucked up out of the way perhaps with protectors attached.
Remove the retaining cover from your factory stereo. Remove the factory stereo retaining bolts. Slide the factory stereo out. Remove the wiring harness and the antenna cable from the back of the factory stereo.
A do-it-yourself manual for a 1990 Holden Apollo would have a wiring harness diagram. These types of manuals are available at most auto part stores.
The factory wiring harness for the trailers will plug in under the back of the vehicle in the area of the spare tire, the harness plugs into the wiring harness for the tail lights.
i know, burnt it.
Unfortunately it does not unplug from the switch. Follow the harness down the column and you will see where the harness disconnects.
The wiring on the back of your 2000 Pontiac alternator consists of a wiring harness. The wiring harness goes to a few relay switch is and regulators.
Easy way is to go to best buy get you a wiring harness that plugs into your factory harness.
If it doesn't have a trailer plug, it does not have a factory trailer harness.
Inferior wiring and connectors can impact performance, but cost doesn't always translate to quality. You may find that the harness is inexpensive because of overstock, etc. Any replacement wiring harness should have the same color wiring as the original factory harness.
chang the wiring harness inside car.
Standard 2 Piece Harness Up To Late 1990
go to wal-mart they have a harness that plugs into the factory harness and wires to radio