While designing a 5V relay shield (for Arduino), do I need to short a common pin with coil pins? - Quora
How to Test a Four Terminal Relay: 7 Steps (with Pictures)
8 pin relay. Electric relay. Electric relays principles and applications. Relay wiring. - YouTube
8 pin relay connection practical video - YouTube
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
Relay Connections | Pin Details | Working Principle – FactoryForward
How to Connect a Single Pole Double Throw (SPDT) Relay in a Circuit