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How much wire is needed?
Nephasth:
There are also controller interfaces that come with premade harnesses, if that's something you'd be interested in.
mgb:
Another option to consider is the economy jamma harness from jammaboards.com. Its $10. Snip off the jamma connector end and you've got all the wire you will need complete with the correct size female disconnects already crimped and they're insulated. It also comes with premade jumpers for the commons. This will give a quick, neat and inexpensive wiring job with multiple color conductors.
bkenobi:
But the JAMMA standard only supports 3 buttons per player, right?
http://www.jammaboards.com/jcenter_jammaFAQ.html
The standard JAMMA harness will give you connections for P1 and P2 joysticks, 3 buttons each, coin switches, and start buttons (total of 18 inputs). If dithrin wants 2 player with 8 buttons each, he will need 28 inputs. You can save a couple buttons by not including a start button and a couple more by not including coin buttons (you'd need to have these as shifted/combined inputs), but that still leaves 24 required inputs.
BobA:
If you look at the wiring harness for the specific product you will see that the economy harness includes wiring for buttons 4 5 and 6 plus other wires that could be used such as test and counter etc. Look at the pinout list not the wiring diagram. I would still go for the 2 player gamepad interface with wiring included if you do not already have an interface.
Harness
bkenobi:
Sure, there are lots of extra wires that won't be needed (monitor and power related for instance). I was just saying that, with a standard JAMMA harness, there wouldn't be enough connectors for the actual controls. I did forget that some of the other things on the harness will probably have the same size female QDC and I wasn't aware that the JAMMA+ or JAMMA economy harness would include those other connectors. I figured that if he were going to buy any QDC's and a crimping tool, he might as well wire it up from scratch.
Anyway, if it's only $10 and reasonable shipping for that harness, that's a really good way to go IMO! Wiring up the CP is not hard, but it does take some time to get the wires the right length, routed correctly, crimped, etc. If you can eliminate a lot of that and pay about what the supplies would cost...DEFINITELY a nice option!
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