http://www.mickeywebpages.com/users/...e_Dia_v1.1.gif The coil side of the relay gets its power from the oil pressure switch. Turn the bike on and test for power on the coil circuit, if you have power replace the relay. Don't forget to test the ground too
Unless you happen to have an easy source of 12V that you can connect the relay to, connect the coil and listen for a click then test continuity on the switch side.