Description
SIERRA 4-Pole Flat Trailer Wiring Harness – TC43754
The SIERRA TC43754 is a 4-pole flat trailer wiring harness for standard ground, tail/marker, left stop/turn and right stop/turn circuits. It is intended for marine-trailer rewiring and connector replacement where a conventional flat 4-way interface is required.
- Standard 4-pole flat trailer connector format
- Supports ground, tail/marker, left stop/turn and right stop/turn circuits
- Suitable for boat-trailer rewiring and connector replacement
- Color-coded trailer wiring simplifies circuit identification
- Pairs with standard 4-way flat tow-vehicle connectors
Before installation, match the 4-flat connector gender and wire functions to the tow vehicle and trailer, and confirm the trailer lighting system is compatible with the converter or harness configuration.
Specifications:
- Connector type: 4-pole flat
- Application: trailer wiring / rewiring
- Circuits: ground, tail/marker, left stop/turn, right stop/turn


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