Amazon.com: trailer light tester
Oyviny 4 Way Flat Trailer Circuit Tester 4 Pin Straight Trailer Light Wiring Socket Tester with LED Indicators for Turn Signal Tail Lights Trouble Shooter Pocket Design (Color:Blue) 4.5 out of 5 stars 75. $8.99 $ 8. 99. Get it as soon as Wed, Nov 24. FREE Shipping on orders over $25 shipped by Amazon.
Get Price