8 pin relay. Electric relay. Electric relays principles and applications. Relay wiring. - YouTube
How To Wire A Relay
EHDIS 4-Pin Relay with Harness Car Truck Motor Heavy Duty 80A 12V On/Off Normally Open SPST Relay Socket Plug 4 Wire Automotive Relay Model JD2912-1H-12VDC 80A 14VDC,Pack of 1