I´m at the finishing stages of getting my 1975 CB360T on the road. The rear directional lights do not work. I think all I need is a flasher relay. The wiring diagram in the Clymer manual I have shows a relay with 3 connections and I have 3 loose wires in the circuit but all the after market relays I´ve found only have 2 prongs. Does anybody know what I need?