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How to Install Tekonsha Wiring Harness 119147KIT on Vehicle with 3 Wire System


How do I connect a three wire tow vehicle to this circuit protector? Which wires on the protector connect to which wires as in, left turn~?, Brake light~?. Thanks


Expert Reply:

If your tow vehicle has a 3 wire system, this means the vehicle's turn, brake and tail light function are on separate wires. When installing the Tekonsha Upgraded Vehicle Wiring Harness # 119147KIT referenced in your question, you will use the following connections:

The yellow wire will go to the left turn wire.
The green wire will go to the vehicle right turn wire.
The brown wire will go to the vehicle tail light wire.
The red wire will go to the vehicle brake wire.

I have attached the full installation details that you can also look through to help with installation.

click to enlarge
expert reply by:
Chris R

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