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Trailer Wiring Harness for a 2003 Ford Crown Victoria

Question:

Need part number for trailer wiring harness.

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Expert Reply:

For your 2003 Ford Crown Victoria you can use Hopkins trailer wiring harness # 46255. There isn't a T-connector that just plugs into the tail light wiring available for your vehicle so you will need to use this hardwire harness.

You will also need a circuit tester such as # 40376 to test the vehicle tail light wiring. On the harness yellow is left turn signal, green is right turn signal, red is brake lights, brown is running lights, and white is ground.

The other red wire with the butt connector attaches to the long red wire. This wire will get connected to the positive battery terminal via the included fuse holder and fuse. This is what powers the trailer lights.

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