Shop Our Products. Blue Point 7 Round Pin Tractor Trailer Light Circuit Tester, YA3179BStore/Diagnostic$55.00Sold out4 payments of $13.75 withLearn moreSold outProduct DetailsUPC: 07920Save this product for later Favorite Favorited View FavoritesShare this product with your friendsShareSharePin itBlue Point 7 Round Pin Tractor Trailer Light Circuit Tester, YA3179BStore/Diagnostic