7 Way Flat Pin Trailer Circuit Tester shop 12-point box end design

12-point box end design

When these fail

This Jumbo service wrench set includes sizes 1-11/16"

Heavy-duty ball and needle bearing

Sub Micronic Kit

7 Way Flat Pin Trailer Circuit Tester shop 12-point box end design7 Way Flat Pin Trailer Circuit Tester Features and Benefits: Quickly and easily test trailer circuits on most light to medium duty trucks and campers Tests vehicle circuits on 7 Flat Spade Pin connections quickly identifies faulty circuits Made from LEDs and ABS plastic ensures durability 1 Year Limited Warranty Tester plugs into vehicle side wiring harness. Each of the 7 leds on the tester correspond to the correct circuit. An LED not lighting up for