4 Pin Normally Closed Relay with Pre Wired Holder and Base Socket 12v 40Amp SPDT Automotive Relay for Car Truck Relay Socket Harness Kit
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On pin 85, there is a white wire. Pin 86 has a yellow wire attached to it. Pin 87A is connected to the green wire in the center of the plug. Pin 30 has the lower green wire. Pin 87 isn't connected to anything.
Selected User Reviews For 4 Pin Normally Closed Relay with Pre Wired Holder and Base Socket 12v 40Amp SPDT Automotive Relay for Car Truck Relay Socket Harness Kit
The product was used as part of an escape room puzzle and performed exactly as expected. The price is reasonable. In fact, I'm planning to buy a second one as a backup. The lack of a proper wiring diagram poses a problem with this product. Which wires belong in the switch (control) loop and which in the load loop are unclear. It would also be beneficial if the manufacturer provided information on the electrical requirements for both loops (voltage range, maximum amps). Through some trial and error, I was able to make this work. It would have been beneficial to have better documentation. You might want to consider other options if you expect this product to be intuitive.
It performs as expected.