Triple shielded dual radio car harness for Motorola radios. Allows for the use of a primary and backup radio in your race car. Waterproof switch allows you to switch from one radio to the other. Fits CP100, CP150, CP200, CT150, CT250, CT450, CT450LS, GP68, GP88, GP208, GP300, GP308, GP320, GP328, GP329, GP338, GP338, GP340, GP350, GP360, GP380, GP640, GP650, GP680, GP1280, GP2000, GTI, GTX, LTS2000, P040, P080, P110, P1225, P1225LS, PR400, PRO3150, SP10, SP21, SP50, VL130, VL50, XTN446 Series, XTN500, XTN600, XU1100, XU2100, XU2600, XV1100, XV2100 and most commercial Motorola handhelds with 2 hole accessory jacks. Also fits HT750, 1250 and 1550 equipped with adapter part number HLN9716. Specify IMSA (4 ring black plastic) or NASCAR (longer, 1/4" stereo, silver) connector at checkout. (Must match helmet kit's male connector.) NOTE: This is not a cheap "universal harness" made overseas that requires an adapter. Made in America.