Jamma control panel wiring help

[gms1975]

Hello,
I am having problems wiring my jamma control panel.  I have a joystick two player buttons, a one player start and a two player start, and a test button wired in.  They all share a common ground going back to the jamma harness.  Only the one player start and the two player start work, the joystick and the three other buttons are no responsive.  I tested all the connections on the control panel with a multimeter and they all are connected properly.  Does anybody have any idea what could be causing this?  The two button that do work are in the middle of the ground line between buttons that don't work.
Any help is appreciated. Thanks

[Spaz Monkey]

Can you explain what you mean when you say, "The two button that do work are in the middle of the ground line between buttons that don't work."  If they all share a common ground, then all the buttons should be working.  Have a pic of your wiring?

[Kevin Mullins]

I think he means the grounds are daisy chained and the two buttons that work are in the middle of the string/chain.

Yeah, a picture would help.....

Is this running a true JAMMA board?