Compatibility Chart:
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Install Notes
Installation Instructions for Audi A4 (2009-Current)
Part Numbers:
- 24950
- 77950
- CQT24950
Wiring Access Location:
- PC3, PC4
Tools Required:
- Ratchet
- Torque Wrench
- Safety Glasses
- Sockets: 10mm, 3/4"
- T25 Torx Bit
- Socket Extension
- Phillips Screwdriver
- Utility Knife
- Silicone Sealant
- Tape Measure
- Marker
Specifications:
- Max Gross Trailer Weight: 2,000 lb. (908 kg)
- Max Tongue Weight: 200 lb. (90.8 kg)
- Note: Do not exceed the towing vehicle manufacturer’s rating.
Installation Time:
- Approx. 25 minutes (Professional Installer)
Step-by-Step Instructions:
-
Remove Bumper Fascia Screws:
- 2009–2016 models: Remove three (3) T25 Torx screws securing the bumper fascia to the trunk pan.
- 2017–Current models: Remove two (2) 10mm hex nuts securing the bumper fascia to the trunk pan.
-
Remove Underbody Panel (If Equipped):
- For single exhaust models, remove three (3) 10mm hex nuts and one push-type rivet, then temporarily remove the underbody panel.
-
Remove Spare Tire and Jack Tool Kit:
- Remove the spare tire and jack tool kit using a 10mm socket.
-
Remove Drain Plugs:
- Use a utility knife to carefully cut the caulking around the two rearmost drain plugs in the trunk pan. Remove the plugs and return them to the vehicle owner.
-
Move Hands-Free Trunk Release Cable:
- If equipped, temporarily relocate the cable away from the trimming area of the fascia.
-
Trim Fascia:
- Use a tape measure, marker, and utility knife to cut a notch approximately 3-1/4" wide x 3" deep, centered on the vehicle.
-
Install Top Plates and Fasteners:
- Pull the fascia down gently and install top plates with 4-1/2" carriage bolts on top of the bumper beam extensions. The bolt location may vary by model year.
-
Install Hitch:
- Raise the hitch into position, aligning the slots with the carriage bolts, and loosely install four (4) hex flanged locknuts.
-
Seal Drain Holes:
- Apply silicone caulk around the drain holes from inside the trunk pan to prevent water and exhaust intrusion.
-
Install Rear Fasteners:
- Install two (2) 1-3/4" carriage bolts and spacer blocks from inside the trunk pan through the hitch holes. Loosely install the conical toothed washers and hex nuts.
-
Tighten Fasteners:
- Torque all 4-1/2" GR5 carriage bolts to 50 Lb.-Ft. (68 N*M).
- Torque all 1-3/4" GR5 carriage bolts to 75 Lb.-Ft. (102 N*M).
-
Reinstall Components:
- Reinstall the hands-free trunk release cable, underbody panel, and bumper fascia. Secure all screws or hex nuts removed earlier.
- Reinstall the spare tire and jack tool kit.
Hardware List:
- (4) Carriage Bolts: 1/2"-13 x 4-1/2" GR5
- (2) Top Plates
- (4) Hex Flanged Locknuts: 1/2"-13 Grade G
- (2) Carriage Bolts: 1/2"-13 x 1-3/4" GR5
- (2) Spacer Blocks: 1/4" x 1.5" x 3"
- (2) Conical Toothed Washers: 1/2"
- (2) Hex Nuts: 1/2"-13 GR5
Safety Notes:
- Regularly inspect all fasteners and the hitch ball to ensure they remain securely tightened.
- Plug any holes in the trunk pan or body panels if the hitch is removed to prevent water or exhaust fumes from entering.
- Replace any damaged hitch or ball immediately.
- Always observe safety precautions and wear eye protection while working beneath the vehicle.
- Do not cut access or attachment holes with a torch.
Drawbar:
- Drawbar Kit: 3593
- Important: The drawbar must be used in the rise position only.
Compliance:
- This product complies with SAE J684, V.E.S.C. Regulation V-5, and safety requirements of the State of New York.
Additional Notes:
- Frequently check the hitch to ensure all fasteners remain tight.
Installation Instructions for T-Connector Adapter
Part Numbers:
- 119191
Wiring Access Location:
- Near the rear of the vehicle, behind the bumper, or as indicated for vehicle-specific configurations.
Tools Required:
- Drill with a 3/32" drill bit.
- Phillips head #2 screwdriver.
- Wire cutters, wire strippers/crimpers.
- Tester or volt meter.
- Socket and ratchet set.
- Double-sided tape (provided).
Step-by-Step Instructions:
Installation of the Module:
-
Determine the mounting location for the module.
- Use the provided double-sided tape to secure the module.
- Ensure the epoxy side of the module faces downward to prevent water buildup.
-
Connect the module’s black wire to a 12-gauge (or larger) power wire using a yellow butt connector.
-
Locate a suitable grounding point near the module:
- Drill a 3/32" hole if necessary and secure the white wire using the provided eyelet and self-tapping screw.
- Clean the grounding area of dirt and rustproofing.
Caution: Verify what is behind the surface before drilling to avoid damage or injury.
Routing Power to the Battery:
-
Route the power wire to the vehicle’s positive battery terminal:
- Use the provided fuse holder, butt connector, and ring terminal to connect to the battery.
- Do not insert the 15-amp fuse yet.
Caution: Ensure the module is connected to a constant power source. Avoid using power sources that are interrupted when the vehicle is off.
Finalizing Installation:
-
Secure the wiring harness with the provided cable ties to prevent damage or rattling.
- Avoid areas where wires may be pinched, cut, or melted.
-
Reconnect the vehicle’s negative (-) battery cable.
-
Insert the 15-amp fuse into the fuse holder and close the cap.
-
Test the installation with a test light or trailer to verify functionality.
- Test each function independently and in combination.
Specifications:
- Max. stop/turn light: 2 per side (4.2 amps).
- Max. tail lights: (7.5 amps).
Hardware List:
- T-Connector adapter.
- 15-amp fuse.
- Fuse holder.
- Eyelet and self-tapping screw.
- Double-sided tape.
- Cable ties.
Safety Notes:
- Handle all components with care to avoid damage.
- Ensure all connections are clean and securely fastened.
- Overloading circuits can cause fires. Do not exceed the towing manufacturer’s rating or the unit specifications.
Manufacturer Notes:
- Read and follow all vehicle warnings and installation instructions.
- Use a test light or trailer to confirm proper installation.
- Consult the vehicle owner’s manual for additional details.