Installation Instructions for BMW 328 Sedan

Part Numbers:

• 24857
• 60273
• 77231
• 24863 (U-Haul)

Wiring Access Location:

• P3, P4

Tools Required:

• Wrenches: 8mm, 10mm, 18mm, 3/4”
• Spray Lubricant

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.

Step-by-Step Instructions:

1. Remove Appearance Panels:

   • Detach both appearance panels by removing (10) 8mm and (4) 10mm screws. Retain these for reinstallation.

2. Remove Existing Flange Nuts:

   • Remove the (4) M12 flange nuts located on the vehicle end panel. Spraying lubricant will assist with removal.
   • Wash the lubricant off the studs if used.

3. Install Flat Washers:

   • Place (3) flat washers on each stud.

4. Position Hitch:

   • Rotate the hitch behind the fascia and raise it into position as shown in Figure 2.
   • Reinstall the flange nuts removed in Step 2. Tighten finger-tight only.

5. Determine Spacer Requirement:

   • Evaluate the number of spacers needed between the hitch bar and vehicle frame cross member. A minimum of one spacer is required.

6. Install Carriage Bolt and Spacer:

   • Using the provided pull wire, insert a carriage bolt and one spacer into the vehicle frame cross member.
   • Thread the pull wire through the spacer(s) and hitch bar as shown in Figure 4.
   • Remove the pull wire and install a conical washer and hex nut onto the carriage bolt.

7. Tighten Fasteners:

   • Torque all M12 fasteners to 62 Lb.-Ft. (84 N*M).
   • Torque all 1/2”-13 GR5 fasteners to 75 Lb.-Ft. (102 N*M).

8. Reinstall Appearance Panels:

   • Reinstall the appearance panel on the passenger side.
   • The driver’s side appearance panel may need to be trimmed (see Figure 3) or returned to the owner. Obtain the owner’s permission before trimming.

Hardware List:

• (12) Flat Washers: 7/16”
• (3) Spacers
• (1) Carriage Bolt: 1/2”-13 x 2.50” GR5
• (1) Conical Washer: 1/2”
• (1) Hex Nut: 1/2”-13
• (1) Pull Wire: 1/2”

Safety Notes:

• Regularly inspect all fasteners and the hitch ball to ensure proper tightening.
• If the hitch is removed, plug any holes in the trunk pan or body panels to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always observe safety precautions and wear eye protection when working beneath the vehicle.
• Do not use a torch to cut access or attachment holes.

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:

• Check the hitch frequently to ensure all fasteners remain tight.
• Proper orientation of spacers is critical for secure installation. Refer to Figure 4 for details.

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:

1. 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.

2. Connect the module’s black wire to a 12-gauge (or larger) power wire using a yellow butt connector.

3. 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:

4. 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:

5. Secure the wiring harness with the provided cable ties to prevent damage or rattling.

   • Avoid areas where wires may be pinched, cut, or melted.

6. Reconnect the vehicle’s negative (-) battery cable.

7. Insert the 15-amp fuse into the fuse holder and close the cap.

8. 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.