Check the listing for details. Camper Cargo Trailer Break Away Switch Safety Brake Kit / Switch and Battery Kit. Condition: New. Listed at 39.99 USD. Clamshell Breakaway Kit, W/ LED Test "TRY ME" Button, Battery Charger, Switch, 2 Mounting Bolts UPC: 769431527356 LED Full Set Up Clam Shell Break Away System. Includes Battery Box, J-ELEC Breakaway Switch Battery. I ncludes built-in charging circuit and LED “Test” button for easy check of the battery charge state. Packed in retail ready barcoded carton allowing “Try Me” testing of the test functionality without opening the carton. Mount: Use the two provided self tapping bolts. Wired with 15″ leads: Black Wire for Charging – Connect to 12v (+) Power Blue Wire supplies current from the breakaway battery – Connect to Switch/Brake System FAST AND FREE SHIPPINGOR PICK UP AT TRAILER PARTS UNLIMITED631 TX 75 NHUNTSVILLE TX 77320