Most Popular 6 Round for 2021 BMW 3 Series

We are a U-Haul Dealer and bought this for use as a test device only. We need to test many vehicles trailer connections to be sure there are no issues before renting a trailer. Some vehicles have the trailer lighting connection mounted in a way that makes it impossible to see the lights on the testers. Of all the testers that are on the market, NOBODY makes one with the test LED's on BOTH sides of the unit. With the test LED's on the end of this unit you can always see them, regardless of the position the trailer socket is mounted! We have the same problem with the 4 pin testers. We purchased 2 different brands where one tester has the LED's on the top, the other has them on the bottom.

Your website led me to believe that this product could tell me whether the electric brake control on the tow vehicle works, without actually connecting the tow vehicle to a trailer. That is not the case, so I spent $20 on something I don't need.

Quick shipping, will order from them again!

Exactly what I needed and It's a great fit