12 Volt, 4 terminal, 40 amp electrical relay
Terminal size: 1/4in. (6.35 mm)
Ideal for lighting, horns and many other accessories
30: 12 Volt (+) fused power in from battery or main power source
85: Ground (-)
86: 12 Volt (+) power from accessory switch
87: 12 Volt (+) power out to accessory
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