“One-Man Testing” for Male and Female 7-Way Round Pin Tractor Trailer Plugs.
The Circuit Chaser® allows the jumping of current to a dead circuit for emergency situations so you can still drive the rig.
Features and Benefits:
- Allows bypassing of troubled circuitry while on the road
- Packaged with an extra jumper connector
- Plugs into the vehicle side socket (J560)
- LEDs indicate that each circuit is working
- Eliminates guesswork
- “Winged” grip for easy removal from electrical connector
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
James Morris (verified owner) –
James Morris (verified owner) –
MARIO –
Save time to know what is wrong on the lights! I pulled different trailers and is very easy know what is wrong my truck or the trailer!
Dave –
Good product Works well and well-designed
Jose M. –
great product i recomended
Omar Nunez –
Great Tester About a year later still running strong and use it everyday !
Amazon Customer –
Great circuit tester Theme item is a Circuit tester that use on trailers. It works great.
Stephen Bates –
Can’t beat it A must for checking trailer 7 way connectors. They work great, I just always end up losing them.
john chapman –
Great I use this for my 10 trucks and 15 trailers. Easy to use.
Alexander Demidenko –
Save some bucks and time Really simple troubleshooting
bmwgeorge –
Nice tester I work as a chassis mechanic and I have to deal with truck drivers on a daily basis. this tester is great way to find out if you 7 way has as bad circuit which will tell you where to start looking for the problem. This item will help you find out if your semi truck 7 way plug is bad or if the chassis that your are hauling has the problem . keep in mind it is always best to use a metering device for the best readings but if you can afford one of those metering devices this 7 way tester will do the trick . I would recommend this item to my fellow chassis mechanics to help do quick trouble shooting on 7 ways
Jen –
Works good Thanks
Lionel Williams –
It’s useful in my line of work. The way it works.
Charles Washington –
priced just right great product
Michael George –
Works like it should I’ve gone through about 4 of these freakin things. And every time I lost one I bought another from snapon like an idiot. This last time I bought it here from amazon. Best decision I made. Way less money and it’s the same exact tool.
Tony Windon –
Easy to use it tells you if the problem is the truck cord or the trailer It’s easy to use save time which is money
j -jay –
100% accurate Every truck driver should have it.
Joseph McNevin –
Great product, well made, great quick diagnostic tool Great tool I use it all the time. tool helps you to quickly pin point whether there is a issue from the truck or trailer side of the lighting electrical system. Compared to my co-workers snap on version only obvious difference was a snap on logo and the significantly different pricing. Have had many truck drivers and other mechanics tell me they have never seen such a tool. Most of which say they are going to get one now. Have had it for a few months now and use it almost every day, so far it has held up. still looks brand new with no issues in functionality.
Winki –
Easy to use This little thing really speeds up the troubleshooting when determining the electrical problem.
Amazon Customer –
Awesome….. This product is amazing!!!
James –
When time is of the essence,this is the tool to have. I work for I’ve tractor trailer fleet …on drive up ,it make life so easy to tell if problem with 🚜 or trailer.glad I got it!