Combined wiring system - brake and turn signals are sent along the same wire - but it is recommended to use a powered module to safeguard the vehicle's wiring and get extra power to support the trailer lights.
Custom Fit Vehicle Wiring Specs:
Features:
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting or splicing required.
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