touch.... the 2 silver... or... the 2 copper.... terminals of the relay.... to the negative and positive side of a 9 volt battery....it will click if relay is good... my daughter bought a 1997 acura rl....... compessor froze up.. replaced compressor.... the wiring on this vehicle is unreal... i had to remove the perfectly good compressor clutch relay... get 10 foot of 18 gauge wiring in 3 differnt colors....made up connectors on the wires..inserted the connectors into the relay base.. { relay removed} ran the 3 wires along the engine toward the drivers door down and inside around the brake pedal to a bracket i made drilled out to fit a switch i bouhy attached to the brake pedal bracket.. bent and hidden , an illuminated