Here is the back of the tach. I want to verify the pinout so that I make sure it is hooked up correctly so that I don't burn anything up. The left pin is showing the ground symbol. The middle or say between the left and right pin you can see it says 12V and the far right pin is labeled 59. Of course the bottom is the bulb. Can anyone verify this for me. I believe the left is ground the light is obvious, but I want to make sure which of the other two is the pulse wire. I though the pulse would be AC. And why would it need a second 12V wire? I bought this on ebay and it didn't have any instructions.
