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Step-by-step how-to: wiring coin door power through J-PAC

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krick:
I have a JAMMA wired cabinet running a MAME computer hooked up via J-PAC.

I was looking into wiring up my coin door lighting and I was wondering if anyone has tried modifying their J-PAC to provide +12v through the JAMMA harness.

If you look closely at the edge connectors on the J-PAC, all the power contacts are not electrically connected to the rest of the J-PAC.

I think it would be possible to solder a +12v lead to the edge of the correct edge connector.

SirPeale:
I think it would be far simpler to run a separate line from your computer's PS.

krick:
Of course it would be simpler.

Since when have I ever done anything the easy way.   ;)

I just think it would be cleaner and more professional looking to use the wiring that's already present in the JAMMA harness instead of running even more wire.

krick:
For those of you out there with JAMMA wired cabinets...

I've been doing a little research on the JAMMA specification and the only mention I can find about coin door power is by Bob Roberts in his article on how to wire a JAMMA harness...
http://www.dameon.net/BBBB/jh.html

He uses wire "F" in the jamma harness as a "12v out" to the coin door.

Is this the "standard" way that JAMMA harnesses are connected?
i.e. is the "F" JAMMA wire usually used for power to the coin door?


moonpatrol 4 lyfe:
If you wanted to spend the money, you could make a pass through connector from some jamma edge connectors, and then pick and choose what wires you want from the JPAC into the arcade machine.  Jake sure that the arcade harness isn't sending 12 Volts to places that need lesser voltages.

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