Troubleshoot male and female 7 round pin tractor trailer electrical circuits on both the truck and trailer side
Allows bypassing of troubled circuitry while on the road
Includes extra jumper connector
Return Policy *
Return for refund within: Non-Refundable
Return for replacement within: 30 days
* Applies to purchases made on matcotools.com only; see your Matco distributor for warranty or return information on purchases made elsewhere.
Rated 5 out of 5 by 3
Rated 5 out of 5 by Caterpillarguy78 Comes in handy and takes the guess work out of diagnosis
I use this tool almost everyday , I work in a pretty busy trucking company and time is of the essence, a few other techs have borrowed this and love it and asked where I got it and usually within a week they have their own . I love it it is a must for any tech that works on big trucks .
September 8, 2015
Rated 5 out of 5 by Dale Trouble shooting tool
I use this product all of the time to test the trucks pig tail going to the 7-way recp on the trailer. It's a must for testing electrical problems. I would highly recommend it to any mechanic.
January 28, 2012
Rated 5 out of 5 by jprx7kidd worth is weight in gold!
must have, easy to use and very simple function, makes for easy diagnosis
December 26, 2011