4-PC. 7-Round-Pin Trailer Harness Tester and Maintenance Set


  • Verify tow vehicle is sending proper signal to the connector, while cleaning tools remove corrosion and verify proper pin size on both male and female truck/trailer plugs
  • Tests tractor electrical circuits
  • Removes corrosion from truck and trailer connectors
  • Enhances electrical contact points
  • Extends harness life
  • Use as a pin wear gauge
  • (1) 7 Round Pin Tractor Trailer Circuit Checker
  • (1) 7 Round Pin Cleaner
  • (1) 2 ml DeoxIT® Cleaner
Shipped via Freight No
Index Name Trailer Tester
Warranty Code C0
Warranty Description See Individual Components For Warranty Information
Weight [Lbs] 1
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$66.99 In Stock