Compatibility Chart:
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Install Notes
Installation Instructions for Chevrolet and GMC Vans
Part Numbers:
- 75121
- 44011
Tools Required:
- Wrenches: 9/16" socket & wrench, 3/4" socket & wrench
- Drill Bits: None
Equipment Required:
- Pull Wire (provided)
Step-by-Step Instructions:
-
Remove Bumper Support Brackets:
- Remove the two lower bumper support brackets, one per side. Save the bolts and washers, and return the brackets to the owner.
-
Install Side Brackets:
- Place the left and right side brackets against the frame bottom.
- Install four 1/2" bolts and washers (removed in Step 1). Leave these bolts loose.
-
Install Bumper Bolts:
- Install two 3/8" bumper bolts (removed in Step 1), two 3/8" conical washers, and two 3/8" lock nuts from the parts package. Leave the lock nuts loose.
- Warning: Always use the 3/8" lock nuts with the 3/8" bumper bolts to prevent the receiver from loosening or separating.
-
Fishwire Bolts into Place:
- Screw the pull wire onto a 1/2" carriage bolt and feed it through a bolt plate and the large hole on the outboard side of the frame. Pull it out through the bottom hole of the frame.
- Repeat for the other side.
- Install two 1/2" conical washers, lock washers, and hex nuts on the bolts. Leave the nuts loose.
-
Tighten Fasteners:
- Tighten bolts and nuts in the exact order listed below to pull the receiver rearward to the bumper before tightening the frame bolts:
- Torque the two 3/8" lock nuts on the bumper to 30 ft-lb (41 N·m).
- Torque the 1/2" nuts and bolts to 75 ft-lb (102 N·m).
- Tighten bolts and nuts in the exact order listed below to pull the receiver rearward to the bumper before tightening the frame bolts:
Torque Specifications:
- 3/8" Lock Nuts: 30 ft-lb (41 N·m)
- 1/2"-13 Nuts and Bolts: 75 ft-lb (102 N·m)
Hardware List:
- (2) Carriage Bolts, 1/2"-13 x 2.00
- (2) Blocks
- (2) Pull Wires, 1/2"-13
- (2) Conical Washers, 1/2"
- (2) Lock Washers, 1/2"
- (2) Hex Nuts, 1/2"-13
- (2) 3/8" Bumper Bolts
- (2) 3/8" Conical Washers
- (2) 3/8" Lock Nuts
Safety Notes:
- Regularly inspect the hitch to ensure all fasteners and the ball are securely tightened.
- Replace any damaged hitch or ball immediately.
- Plug any holes in the vehicle's trunk pan or body panels to prevent water or exhaust fumes from entering.
- Do not lubricate threads, as bolt failure may occur due to over-tightening.
- Follow proper safety precautions when working beneath the vehicle, including wearing eye protection.
- Do not cut access or attachment holes with a torch.
- Do not drill or weld the hitch.
Specifications:
- Weight Carrying (Ball Mount):
- Max Gross Trailer Weight: 5,000 lb (2,270 kg)
- Max Tongue Weight: 500 lb (227 kg)
- Weight Distributing:
- Max Gross Trailer Weight: 7,500 lb (3,405 kg)
- Max Tongue Weight: 750 lb (341 kg)
Compliance:
- This product complies with V.E.S.C. Regulation V-5 and SAE J684 standards.
Installation Instructions for Trailer Light Wiring Kit
Part Number:
- 20252
Tools Required:
- Hot Air Gun or Appropriate Heat Source
- Wire Crimpers
- Drill (3/32” Drill Bit)
- Phillips Head Screwdriver
- Circuit Tester
Step-by-Step Instructions:
Step 1: Locate the Taillight Wiring Harness
- Access the vehicle's taillight wiring harness.
- Using the provided instructions, identify the appropriate wires for connection:
- Green Wire: Right Turn & Stop
- Yellow Wire: Left Turn & Stop
- Brown Wire: Taillights
- White Wire: Ground
Step 2: Make the Electrical Connections
-
Match the color-coded wires from the wiring kit to the corresponding vehicle wires.
- Use a circuit tester to verify each wire's function before connecting.
- CAUTION: Test one wire at a time to prevent damage to electronic components.
-
Connect the wires using the provided insulated butt connectors:
- Strip the ends of each wire and seat them properly in the connector.
- Use a crimping tool designed for insulated splices to secure the connections.
-
Heat the connectors:
- Apply heat directly to the center of each splice using a hot air gun.
- Work from the center outward until the tubing recovers and adhesive flows.
- Allow the connections to cool before inspecting for integrity.
Step 3: Ground the System
- Locate a grounding point near the wiring harness, such as the vehicle frame or cross member.
- Do not drill into the vehicle floor or bed.
- Clean the area to remove dirt, rust, or undercoating.
- Drill a 3/32" hole at the grounding point and secure the white wire using the provided eyelet and screw.
Step 4: Verify the Installation
- Test all connections using a circuit tester or trailer:
- Verify the functionality of taillights, turn signals, and brake lights.
- Ensure all connections are complete and secure.
- If issues are identified, double-check the wiring and connections for errors.
Step 5: Store the 4-Flat Connector
- Store the 4-flat connector in the rear cargo area when not in use to protect it from damage and environmental exposure.
Warnings and Notes:
- WARNING: Overloading a circuit can cause fires. Do not exceed the following limits:
- Stop/Turn Lights: 7.5 amps (1 per side)
- Tail Lights: 7.5 amps
- WARNING: Always verify what is behind any surface before drilling to avoid vehicle damage or injury.
- NOTE: Trailer lighting that requires more than 7.5 amps per circuit must use a Trailer Light Power Converter.
- NOTE: If your trailer requires a plug other than the 4-flat, consult your dealer for optional 6-way or 7-way adapters.
Maintenance:
- Inspect the wiring harness periodically for damage, corrosion, or loose connections.
- Reapply heat to connectors if the adhesive seal weakens.
Specifications:
- Maximum Load:
- Stop/Turn Lights: 7.5 amps (1 per side)
- Tail Lights: 7.5 amps
- Recommended Grounding Hole Size: 3/32 inches