Tester plugs into connector of tow vehicle and illuminates when the electrical connections are correct. Tests to SAE standards on flat 4-way functions for tail light, stop/turn lights, and ground.WARNING: Cancer and/or Reproductive Harm. See
Electrical
4 Way Flat Tester
$6.19
Anderson
Model: V5411
Availability: 21 in stock (can be backordered)
List Price: $6.19