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12V 5 Prong Relays with 5 Prong Sockets - You get 5 relays + 5 socket wires These are your 'switch' contacts: 85 - RED 86 - YELLOW When this circuit is completed the actuator will close 87 and open 87a. 30- BLACK 87- BLUE 87a- WHITE Black is the power to your accessorie(s), 87 or 87a depending on whether the relay has power. 85, 86- Relay polarity shouldn't really matter. 30-12v 87-NO 87a-NC For example, in a application of having the fog lights turn off when high beams are on: 30 - Low beam 12v 87a - Fog lights 85 - High beams 12v 86 - Ground 87 - Empty.