3/4 Player start buttons and coin credits not working

Shawn1976

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3/4 Player start buttons and coin credits not working

I've got a sunset riders pcb I've hooked through a jamma harness and am wondering where exactly the 3/4 harness the start button is located at? i've looked all though the manual and can't find any indication on where it would be. I'm also having a problem on the 3/4 player credits button working. I hit the coin credit lever and the game doesn't select a credit but when I go to test mode and check the connection through the I/O settings it showing that the lever is functional.
Can someone help me out here. Any help would be greatly appreciated.
 
Ok. Start problem is fixed. If anyone is interested pin 10 is the pin out for the 3/4 player start buttons. The problem I'm having now is only the 1/2 player coin out work. After I hit the 1 or 2 player coin credits I can select from all 4 characters. So my guess is that I have a set of 2 player roms on the board. Can somone verify this for me as well as letting me know that if I do have 2 player roms on how I can get the 4 player roms to replace them. Any help would be greatly appreciated.
 
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