Tekonsha 119178 Tail Light Converter Instruction Manual

1. Introduction

The Tekonsha 119178 Tail Light Converter is designed to adapt a vehicle's separate turn and stop light system (3-wire system) to a standard trailer's combined taillight wiring system (2-wire system). This unit ensures proper synchronization of vehicle and trailer lighting functions, including tail lights, stop lights, and turn signals. It is compatible with both LED and incandescent bulbs on the vehicle and trailer sides and features integrated circuit protection for enhanced safety.

Image of the Tekonsha 119178 Tail Light Converter, a compact black unit with wiring harnesses.

2. Safety Information

• Always disconnect the vehicle's battery before beginning any electrical installation to prevent electrical shock or damage to the vehicle's electrical system.
• Ensure all wire connections are secure and properly insulated to prevent short circuits.
• Mount the converter in a dry, protected location away from excessive heat, moisture, and moving parts.
• If you are unsure about any part of the installation process, consult a qualified automotive technician.
• Do not exceed the specified circuit capacities of the converter.

3. Package Contents

Verify that all components are present before beginning installation:

• Tekonsha 119178 Tail Light Converter Unit
• 60-inch Car Side 4-Flat Vehicle Connector with Cover
• Wiring Harness with 16 Gauge Bonded Wire

4. Product Features

• Universal Circuit Protected Design: Adapts 3-wire vehicle systems to 2-wire trailer systems.
• Broad Compatibility: Works with both LED and incandescent bulbs on the vehicle and trailer.
• Integrated Short Circuit Protection: Re-settable protection safeguards the tow vehicle from electrical shorts or incorrect wiring.
• High Capacity: 2.1 amp stop light/turn signal circuit capacity; 7.5 amp taillight circuit capacity.
• Durable Construction: All solid-state components for reliable performance.
• Extended Reach: Features a 60-inch long, car side 4-flat vehicle connector with cover and 16 gauge bonded wire.

5. Setup and Installation

Follow these steps for proper installation of the tail light converter:

1. Preparation: Gather necessary tools (wire strippers, crimpers, electrical tape, circuit tester, mounting hardware). Disconnect the vehicle's negative battery terminal.
2. Identify Vehicle Wires: Using a circuit tester, identify the following wires on your vehicle's taillight harness:
   • Tail Light (running lights)
   • Stop Light (brake lights)
   • Left Turn Signal
   • Right Turn Signal
   • Ground
3. Connect Converter Input Wires: Splice the converter's input wires to the corresponding vehicle wires. Ensure secure connections using appropriate connectors or soldering, and insulate thoroughly with electrical tape or heat shrink tubing.
   • Converter Brown Wire → Vehicle Tail Light Wire
   • Converter Red Wire → Vehicle Stop Light Wire
   • Converter Yellow Wire → Vehicle Left Turn Signal Wire
   • Converter Green Wire → Vehicle Right Turn Signal Wire
   • Converter White Wire → Vehicle Ground (ensure a good chassis ground connection)
4. Mount Converter: Secure the converter unit in a dry, protected area of the vehicle, such as inside the trunk or under the rear bumper, using screws or zip ties. Ensure it is not exposed to direct water spray or excessive heat.
5. Connect to Trailer: Route the converter's 4-flat output connector to the rear of the vehicle where it can easily connect to the trailer's 4-flat plug. Use the included cover to protect the connector when not in use.
6. Test System: Reconnect the vehicle's battery. Connect a trailer or a trailer light tester to the 4-flat connector. Test all lighting functions: tail lights, brake lights, left turn signal, and right turn signal. Ensure all lights operate correctly and independently.

6. Operating Instructions

Once properly installed, the Tekonsha 119178 Tail Light Converter operates automatically. When the vehicle's lights are activated, the converter processes the signals and sends the correct output to the trailer's lighting system. No manual intervention is required during operation.

• Before each towing trip, ensure the 4-flat connector is securely plugged into the trailer and that all trailer lights are functioning correctly.
• The converter is designed to work with both LED and incandescent bulbs on both the vehicle and trailer, providing flexibility for various setups.

7. Maintenance

Minimal maintenance is required for the Tekonsha 119178 Tail Light Converter:

• Regular Inspection: Periodically inspect all wiring and connections for signs of wear, corrosion, or damage. Repair or replace any compromised components immediately.
• Clean Connections: Keep the 4-flat connector pins clean and free of dirt or debris. Use dielectric grease on the pins to prevent corrosion, especially in harsh environments.
• Secure Mounting: Ensure the converter unit remains securely mounted in its designated location.

8. Troubleshooting

If you encounter issues with your tail light converter, refer to the following troubleshooting guide:

9. Specifications

• Model: 119178
• Brand: Tekonsha
• Stop Light/Turn Signal Circuit Capacity: 2.1 Amps per circuit
• Taillight Circuit Capacity: 7.5 Amps
• Voltage: 12 Volts
• Wattage: 26.2 Watts
• Product Dimensions: 22.56 x 10.11 x 4.78 cm (8.88 x 3.98 x 1.88 inches)
• Item Weight: 181 g (0.4 lbs)
• Wire Gauge: 16 gauge bonded wire
• Connector Type: 4-flat vehicle connector with cover
• Protection: Integrated re-settable short circuit protection
• Bulb Compatibility: LED and/or Incandescent (vehicle and trailer)

10. Warranty and Support

The Tekonsha 119178 Tail Light Converter is backed by Tekonsha's 1 Year Limited Warranty. This warranty covers defects in materials and workmanship under normal use.

For warranty claims, technical assistance, or further support, please contact Tekonsha customer service through their official website or the retailer where the product was purchased. Please have your product model number and purchase information available when contacting support.