It is not only useful for a starter relay but it can be used for additional lighting or a horn relay. Basically any additional electrical add-on you are using. Ever needed to add a relay but didn't because the wiring was just too complicated? Our Add On Relay kit makes it easy with 6V, 20/30A relay, socket, wires, fusible link, and wiring diagram.

Fits 1965-1969 Porsche 912 ;1964-1965 Porsche 356C ;1970-1976 Porsche 914