Amazon.com: 10 Pack 30/40 AMP Waterproof 5-Pin 12V Relay Switch οΌSPDTοΌfor 12 Volt Automotive Marine Relays for Boats Auto Fan Cars : Automotive
MFJ Auto Electrical - π»ββββββ βββ‘ββ€ββ£ β¦ββ£β 4 βββ β‘ββββ¨π πΉ4 pin relays use 2 pins (85 & 86) to control the coil and 2 pins (30 & 87) which switch power