Phetishboy
Well-known member
Tying a JAMMA Harness to Original Midway Coin Door Wiring
I wanted to keep the original Midway wire harness on my Pacman coin door, then just use a mating molex plug and plug my Jamma harness outputs directly up to the original molex. The problem I am having is that beyond the service switch, coin 1 switch, 1 ground wire and the 12v line for the coin lights, I am lost.
-The coin counter has 2 inputs. Are they supposed to be counter 1 and ground, counter 1 and 12v, or counter 1 and counter 2?
-The Test switch is the Midway slider/toggle type and has 3 terminals. Besides Test and ground, what else ties in to the 3rd terminal?
-Does Midway just tie both coin switches together, or is there a coin 1 and coin 2? If tied together, I assume just using the coin 1 output would suffice?
-I assume the slam switch would use tilt and a ground?
-Do you need to use ground loops in the connector? How many grounds did Midway originally have running to their coin doors? It seems if you run just one ground wire, you'd need to loop or daisy chain it within the connector at least 4 times to cover all the pins in the coin door connector that need a ground, right?
Thanks for your time.
I wanted to keep the original Midway wire harness on my Pacman coin door, then just use a mating molex plug and plug my Jamma harness outputs directly up to the original molex. The problem I am having is that beyond the service switch, coin 1 switch, 1 ground wire and the 12v line for the coin lights, I am lost.
-The coin counter has 2 inputs. Are they supposed to be counter 1 and ground, counter 1 and 12v, or counter 1 and counter 2?
-The Test switch is the Midway slider/toggle type and has 3 terminals. Besides Test and ground, what else ties in to the 3rd terminal?
-Does Midway just tie both coin switches together, or is there a coin 1 and coin 2? If tied together, I assume just using the coin 1 output would suffice?
-I assume the slam switch would use tilt and a ground?
-Do you need to use ground loops in the connector? How many grounds did Midway originally have running to their coin doors? It seems if you run just one ground wire, you'd need to loop or daisy chain it within the connector at least 4 times to cover all the pins in the coin door connector that need a ground, right?
Thanks for your time.

