Quick-connect adapter letting a vehicle equipped with a 7-way round trailer connector tow a trailer using a simpler 4-way flat wiring harness.
The Valterra A10-7274 is a trailer wiring adapter that plugs into a vehicle's 7-way round (blade-style) connector on one end and provides a standard 4-way flat connector on the other, for towing a trailer that only uses the simpler 4-pin wiring setup. It handles the essential lighting circuits - ground, left turn, right turn, and brake - so trailer lights stay properly synced with the tow vehicle. This is a common adapter for anyone whose truck or SUV came factory-equipped with a 7-way connector but who's towing a smaller trailer, boat, or utility trailer wired for 4-way flat.
If the vehicle instead has a 6-pole round connector, see Valterra's separate 6-Way to 4-Way Flat Adapter, part #A10-7264VP. For a longer connection with a pre-wired harness instead of a compact plug adapter, see the A10-7084VP, a 12" 7-way to 4-way pre-wire harness with additional leads for brake and accessory power.
• (1) Valterra A10-7274 7-way to 4-way flat adapter plug