4Pdt Relay Wiring Diagram. Normally on a 4pdt relay, the pins are grouped like this, in order left to right: Both methods described in this video on dpdt. 37 12v 4 Pin Relay Wiring Diagram Wiring Diagram Online Source from sitzone.blogspot.com Signal relay, 4pdt, 2a, 250vac, th. In my previous post, i showed. 56 omron […]