Description Van mounted 24 volt power box with auto light test feature for testing the trailers electrical system. Designed to enable one operator to test the complete trailer lighting system and test the ABS warning lamp function on the trailer using the ISO 7638 socket. Self contained 24 volt power box in a robust stainless steel case which mounts to headboard of your vehicle, comes with three switchable sockets (24S, 24N & ISO7638) & built in voltmeter. (batteries not included)
