The intermediate piece is ideal to use to get extra length between the first fitting and the socket. You connect the connectors on the extension piece to the connectors at the beginning of the festoon lighting cable. In this way, the section between the plug and the first fitting is extended. On the inside of the connector is a rubber ring. This protects the transition piece better against rain than the connection of the plug with mating connector of a standard extension cable.
The intermediate piece is only suitable for connectable festoon lighting cables with new connectors.
The robust cables are made of high quality rubber with a copper wiring of 2x1.5mm2
