my cab has a sub harness?

[darkmavis]

i have a teemage mutant hero turtles cab and the jamma bit seems fairly straight forward.
now this is the bit thas confusing me.

theres a black box with dip switches on it and on the other side the board. (ive now forund out by getting hold of the manual its called a sub harness)

The white boxes from each player (the analogue 'kick' looms i think ) are
divided between the JAMMA side and the black box side (p1 and p2 go to std harness and 3-4 go to the sub), do  these normally fit into the extra ports on the pcb ?
don't know how they could be attached to the JPAC or PC.?? 

what i wanted to do was have player 1 and 2  6 buttons each  and 3 and four the way they are (2 button).
now if i attach a jpac will all 4 work 'as is' i.e. alll joysticks,start buttons (4 of) and the 2 buttons? im  confused about that hardware i need to buy to make this work. thanks guys youve been really (patient) and helpfull !

i have bought the project arcade book but its taking (i would order it over chrismas wouldnt i? ) ages to arrive so any help would be most helpfull!

[RayB]

OK here's the thing.... the JAMMA standard only supports 2 players with 2 or 3 buttons each. So that's why you have a secondary harness. I suspect you can't use a JPAC for 4 players, and will instead need to use an IPAC-4.

Also, in order to preserve the harnesses you do have in there, you could probably buy a couple JAMMA fingerboards. One of them, you'll have to cut down to size so it fits your sub-harness. Then what you do is you wire up the fingerboards to the IPAC-4.

~Ray B.

[darkmavis]

thanks for the info, but i think (i may be wrong )  this would be the better way?

If you have a 4 player cabinet you can use an I-PAC2 board as well as a J-PAC and plug the I-PAC into the pass-through connector of the J-PAC. You will need to re-program the I-PAC board for correct player 3 and 4 keycodes (i take it the keycodes would need to be remapped due to the jpac using the same config?)

so this would mean either a) pulling wires from the sub hernss and rewiring em to the i-pac  or making new uns.   am i correct in thinking that, with this setup the jpac would cater for p1-p2 with the ipac soeting out p3-p4 ?   it alsoo speaks of wiring up button 3-4 on p1-p2 to the  wiring harness, (not a big job) is it better to just use the jpac coz i only want 6 buttons anyways ?

[SirPeale]

A J-PAC supports two players, eight buttons per player.  Three per player go thru the JAMMA harness, the others come off the screw terminals.

For a four player JAMMA setup, use a J-PAC and an IPAC-2.  You probably want the USB versions for this.

[RayB]

Well there you go. I'd still recommend using a fingerboard to wire the sub-harness, rather than hacking it up.

[darkmavis]

im just going to leave the sub harness as is, and wire sraight from the stcks,buttons to the ipac the harness is doing no harm where is is so ill leave it