Make installing your trailer wiring harness as easy as possible with a custom fit wiring harness. Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers.
Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.
Wiring Adapter Fitguide
Trailer Wiring Manufacturers
Search For Custom Fit Audi A4 AccessoriesSelect A Category Below
Towing
Audi A4 Trailer Hitch
Audi A4 Trailer Wiring
Audi A4 Brake Controller
Cargo Control
Audi A4 Roof Rack
Audi A4 Trunk Bike Rack
Performance Accessories
Audi A4 Air Filter
Audi A4 Exhaust
Audi A4 Performance Chip Tuners
Audi A4 Vehicle Lights
Audi A4 Tire Chains
Audi A4 Fluid Filters
Audi A4 Catalytic Converters
Audi A4 Vehicle Engine Heaters
Audi A4 Radiator Fan
Audi A4 Cabin Air Filter
Vehicle Trim
Audi A4 Floor Mats
Audi A4 Vehicle Covers
Audi A4 Side Window Vents
Audi A4 Lamp Guards
Audi A4 Vehicle Seat Covers
Audi A4 Windshield Wiper Blades
Audi A4 Windshield Covers
Audi A4 Vehicle Air Mattress
