Mustang Brake pressure differential valve switch lock tool
This tool solves the problem of the piston moving off center while bleeding your brakes causing the the brake warning light to activate. This tool is used to hold the piston in place while bleeding the brakes. ** NOT FOR USE WHILE VEHICLE IS IN MOTION ! ** USE- Before bleeding the brakes make certain the piston is centered in the brake switch warning light hole, install the tool in place of the warning switch, finger tight ONLY. Bleed the brakes. Making certain the brake bleeders are closed remove the tool and replace the warning switch and wiring.