Recommended Trailer Wiring Harness and Other Parts to Tow a Trailer With a 2017 Audi Q7

Question:

Need wiring harness receiver

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Expert Reply:

It sounds like you're looking for a trailer wiring harness for your 2017 Audi Q7.

If the Audi came with the factory tow package but doesn't have the connector you can use the Curt # C55774 which will provide you with a 4-way and 7-way connector. This harness plugs into the tow package wiring harness which will be under the rear of the vehicle.

If you don't have the tow package I recommend the ZCI Harness # 119250KIT. This installs by clamping to the Audi's existing wiring without splicing into it. Therefore there's no threat to the vehicle and it won't void any warranties with Audi. This will give you a 4-way connector.

If the trailer has a 7-way on it use the adapter # 37185 in conjunction with the ZCI 4-way. Just cap off the extra wires of the adapter. To power a trailer's brakes, if you have them, you'll need a brake controller. With your Audi I recommend using the Prodigy RF # 90250. This installs on the trailer and connects in-line with the 7-way connectors of the trailer and Audi. So again, there's no splicing into the vehicle's wiring. You will need to run a wire from the # 37185 to the positive side of the vehicle's battery to power the Prodigy. Use 10 gauge wire # 10-1-1, which is sold by the foot, with a 40 amp circuit breaker # 9510.

If you also need a trailer hitch receiver I recommend the Draw-Tite # 76076. This s a 2 inch, Class III trailer hitch custom designed for your Q7.

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Charles S

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