JAMMA Ground Question

thefader

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I noticed on a game I have, pins 27, 28, e, f goto the ground on the power supply box, and pins 1, 2, a, b goto the ground on the controls, coin mechs, ect. Can this be done either way? Does it matter which 4 grounds go where? thanks
 
wire gauge

On some jamma harnesses the wires for power are heavier than those for signal switches.
If this is the case, the heavier wires should go to the power supply.
If the wires are all the same gauge then it doesn't matter.


*the only other thing you may want to take note of is the trace sizes on the actual circuit board.
The power traces 'may' be heavier as well, in which case I would use the ground wires commonly designated for power.
 
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