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When your trailer has a 4-way plug but your vehicle only offers a 7-way blade, this adapter makes the conversion simple. The Pollak 7 Pole to 4 Way Connector Adapter plugs right into the existing 7-way socket and gives you a standard 4-flat connection for running lights, turn signals, brake lights, and ground. No extra wiring or tools—just plug it in and tow.
If you tow more than one trailer, this adapter saves time. It fits any standard 7-blade vehicle socket and lets you hook up to a trailer with a 4-flat connector in seconds. Its one-piece plug design keeps things neat and portable so it’s easy to stow in the glove box or tool bag when not in use.
Wiring adapters live in tough conditions, and Pollak’s durable housing helps keep the electrical contacts clean and secure. The tight-fitting connection reduces the chance of intermittent power loss to your trailer lights, keeping them working consistently trip after trip.
There’s no need to splice wires or alter your factory harness. This adapter keeps your towing setup intact—just plug it into the vehicle’s existing 7-way socket and connect your trailer’s 4-way flat. It’s the quick fix that gets you on the road fast without changing any wiring.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Steve M.
10/27/2025
So its been a year since I got this adapter for my VW Atlas and I have used it many times on 2 different trailers and it still works perfectly. I am very happy with the product. Steve
Walt R.
1/21/2015
Worked great thank you!
Dan
4/27/2026
I was able to use this successfully on my trailer and its working very well.
Louis
2/15/2025
I gave up on using it after the 4 pin on the trailer lost a another prong and almost caused an accident because the lights weren’t working I bought a seven pin end and connected it to the trailer wiring. No refelection on this product. But the cheap four pin male on the trailer sucks.
Kate F.
2/17/2025
James
6/14/2025
Works perfect everytime we hook up.
Jenny N.
5/1/2024
I see what you wanted to do however using a LED tester would not provide enough resistance to make the SUV think that a trailer was plugged in. Typically what I recommend is turning off the feature in the SUV when you are using the bike rack. I know it can be a bit of a pain.
Rick B.
8/23/2024
I found out shortly after buying this adapter that I didnt need it and returned it.
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Ralph
8/23/2021
great use it a lot