30/40 Amp SPDT Automotive Relays & 5-Wire Relay Sockets. 1x SOCKETS CAR WIRING SPDT RELAY. Relays and sockets are used for many car electronic applications to turn on/off almost any device. They are also used when a device draws heavy amperage such as car alarms, remote starts, HID headlights, pop doors, trunk releases strobe lights, fog lights, stereos, fans, air horns, and much more.
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