Wiring Trailer Lights with a 4-Way Plug (It's Easier Than ...Explore further
A 4-way plug connects your trailer and tow vehicle and provides the required running lights, turn signals, ground, and brake lights. Most of us aren't electricians, but that doesn't mean wiring a trailer or replacing corroded wiring is beyond us. We'll walk you through the wiring process--it's easier than you think!
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