ITEM NAME:20x Car 40A 5PIN Terminals Mini Relay Socket Connector Terminal Holder .like-pro-float .like-pro-price-both{clear: both;.12V/24V 30-80Amp 5 Pin Relay Socket for Automotive. 20 Pieces Relay Socket. 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.