Designed so that one person can make sure a trailer has been wired properly and all functions are working'Tests all trailer functions - left turn, brake, tail, backup lights, electric brakes and auxiliary power'Trailer lights illuminate and LED lights on the tester to show function operation'Adapts to 4-wire flat, 6-pole round, or 7 RV blade'For electric brakes, magnets are activated to determine correct operation

Technical Details

Size (LWH): 17.8 inches, 11.8 inches, 3.8 inches
Product Details
Product Dimensions: 17.8 x 11.8 x 3.8 inches
Shipping Weight: 4.9 pounds (View shipping rates and policies)
ASIN : B000234KUQ