Wiring + Temperature Switch 30AMP Relay Kits FIT Electric Radiator Engine Fan
Turn on the relay. - Pin 85 - is usually negative (-) - Pin 86 - is usually positive (+) Pin 30 - is either a (+) or (-) source that feeds Pin 87 or Pin 87a Pin 87 - when the relay is 'on': Pin 30 and Pin 87 are connected.