Late Models and Grand Nationals - Ttransponder must be placed 24 inches or more behind the center line of the rear axle to the forward edge of the transponder, on the right side framerail. B Mods - Transponder must be placed 24" or more, behind the center line of the rear axle to the forward edge of the transponder, on the right side frame rail.The transponder should be mounted on the rear of the mid plate, no higher than 24” off the ground, in an area where the temperature is less than 122 degrees, and with a clear view of the track transponder line, with nothing blocking the signal of the transponder. (Mounting position was changed on April 23, 2020) Sprints - Transponder must be mounted on the left side rear tortion tubes. TRANSPONDER MOUNTING DIAGRAM download PDF |