Installation Instructions for Trailer Tow Harness
Part Number: 50-97-410

Tools Required:

• Drill with 3/32” and 1/4" Drill Bits
• 2” Hole Saw
• Center Punch
• 5/16” Socket

Step-by-Step Instructions:

Step 1: Select and Prepare the Mounting Point

1. Locate a suitable mounting point on the vehicle, typically on the driver’s side between the rear cab post and the wheel well area.
   • Ensure there is sufficient clearance behind the selected surface before drilling.
2. Drill a pilot hole using a 1/4” drill bit.
3. Verify mounting location and wire lengths.
4. Use a 2” hole saw to complete the mounting hole.

CAUTION:
Verify what is behind any surface before drilling to avoid vehicle damage or personal injury. Do not drill into exposed surfaces.

NOTE:
Apply rust-proof coating to all drilled areas to prevent future rusting (not provided).

Step 2: Route the Wire Connectors

1. Carefully route the OE wire connectors through the 2” hole.
   • Avoid scraping or damaging the wires against sharp edges of the sheet metal.
2. Use the 7-way connector end as a guide to mark the mounting hole locations with a center punch.
3. Slide the 7-way connector aside and drill four 3/32” holes in the marked positions.

Step 3: Mount the 7-Way Connector

1. Secure the 7-way connector to the vehicle surface using the 4 self-tapping screws provided.
   • If the 90-degree bend of the connector is too close to the truck bed wall, use the provided spacer for proper clearance.

Step 4: Connect to the Factory 7-Way Harness

1. Locate the vehicle’s 7-way factory harness near the rear bumper.
2. Separate the factory connector carefully without breaking the locking tabs.
3. Connect the Trailer Tow Harness between the factory plugs.
   • Ensure all surfaces are clean and free of dirt.

NOTE:
For Dodge vehicles, the connector may be rectangular.

Step 5: Secure Loose Wiring

1. Route the wiring carefully, avoiding:
   • Hot pipes
   • Heat shields
   • The fuel tank
   • Any sharp or pinch points that could damage the harness.
2. Use cable ties (not provided) to secure the wiring to the vehicle.

Final Steps:

• Test the Installation: Verify the function of the trailer tow harness using a test light or an actual trailer connection.
• Check that all connections are secure and functional.

NOTE:
On some vehicles, it may be necessary to add a fuse or relay (not provided) to activate all functions of the 7-way connector. Refer to the owner’s manual for fuse and relay locations.

Safety Warnings:

• Ensure all wires are properly secured and routed away from any sharp, hot, or moving parts.
• Periodically inspect the harness for wear or damage.
• Do not exceed the manufacturer’s towing capacity.

End of Instructions

Installation Instructions for Trailer Tow Harness
Part Number: 50-97-410

Tools Required:

• Drill with 3/32” and 1/4" Drill Bits
• 2” Hole Saw
• Center Punch
• 5/16” Socket

Step-by-Step Instructions:

Step 1: Select and Prepare the Mounting Point

1. Locate a suitable mounting point on the vehicle, typically on the driver’s side between the rear cab post and the wheel well area.
   • Ensure there is sufficient clearance behind the selected surface before drilling.
2. Drill a pilot hole using a 1/4” drill bit.
3. Verify mounting location and wire lengths.
4. Use a 2” hole saw to complete the mounting hole.

CAUTION:
Verify what is behind any surface before drilling to avoid vehicle damage or personal injury. Do not drill into exposed surfaces.

NOTE:
Apply rust-proof coating to all drilled areas to prevent future rusting (not provided).

Step 2: Route the Wire Connectors

1. Carefully route the OE wire connectors through the 2” hole.
   • Avoid scraping or damaging the wires against sharp edges of the sheet metal.
2. Use the 7-way connector end as a guide to mark the mounting hole locations with a center punch.
3. Slide the 7-way connector aside and drill four 3/32” holes in the marked positions.

Step 3: Mount the 7-Way Connector

1. Secure the 7-way connector to the vehicle surface using the 4 self-tapping screws provided.
   • If the 90-degree bend of the connector is too close to the truck bed wall, use the provided spacer for proper clearance.

Step 4: Connect to the Factory 7-Way Harness

1. Locate the vehicle’s 7-way factory harness near the rear bumper.
2. Separate the factory connector carefully without breaking the locking tabs.
3. Connect the Trailer Tow Harness between the factory plugs.
   • Ensure all surfaces are clean and free of dirt.

NOTE:
For Dodge vehicles, the connector may be rectangular.

Step 5: Secure Loose Wiring

1. Route the wiring carefully, avoiding:
   • Hot pipes
   • Heat shields
   • The fuel tank
   • Any sharp or pinch points that could damage the harness.
2. Use cable ties (not provided) to secure the wiring to the vehicle.

Final Steps:

• Test the Installation: Verify the function of the trailer tow harness using a test light or an actual trailer connection.
• Check that all connections are secure and functional.

NOTE:
On some vehicles, it may be necessary to add a fuse or relay (not provided) to activate all functions of the 7-way connector. Refer to the owner’s manual for fuse and relay locations.

Safety Warnings:

• Ensure all wires are properly secured and routed away from any sharp, hot, or moving parts.
• Periodically inspect the harness for wear or damage.
• Do not exceed the manufacturer’s towing capacity.

Attention:

This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.

For Technical Support:

For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.

Warranty Information:

For complete warranty instructions, please download the full installation PDF.