Find the perfect 4-pin trailer connector or wiring harness to help you haul your loads wherever you need to go. By Hearst Autos Research Updated: Aug 1, 2022. Save Article.

Trailer wiring may be easy. Many vehicles, particularly pickups and SUVs, come prewired for trailers. ... Got a 7-pin connector on the truck and an inline 4-pin connector on the trailer?

Corner Wrench: The scoop on trailer wiring. Whether it's a four- or seven-pin connector, wiring hitches into modern vehicles is more complex than ever ...

Buyers Products unveils a 59-inch LED directional arrow bar and a plug-in trailer strobe kit to improve visibility and safety ...

The center pin should be 12 volts with the ignition switch “on.” Pins around the perimeter at 4 and 7 o’clock are often turn signals.-if power is missing at the tractor’s 7-pin connector ...

Q:I am having a problem troubleshooting the trailer light plug on a 2002 Chevy Silverado. I get no power there. I've checked all the fuses and they're good. I expect it's a simple grounding ...