Review on π 7865L 7-Pin Trailer Circuit Tester by Steve Arnold
Time saving for circuit testers
I used to work with 7-pin plugs, but never with combination plugs for tractor units. I work for a company that has semi trucks and thought this would be a handy tool. I didn't know I would use it as soon as I received it. .This is a must have for any mechanic. This eliminates the need to guess which circuits are powered and which are not. This way you can find out if the problem is with the tractor or the trailer. It should be.
- Robust design
- Other interesting options are available.
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