SNK vs Capcom SvC Chaos D button not working

[And One]

Hello, I'm not sure if this is the right place for this question or if this has come up before but I got a SvC Chaos JAMMA board and when I hook it up and turn on my cabinet everything works great but the D button does not work. A,B, and C work great but no D button. Is there something I'm missing ?

 

[Niko]

What is your cab? You will likely need to trace your D button wiring to the jamma edge.

 

[And One]

I think you are right. The cabinet I'm using is a old mortal kombat cabinet. Thank you for the response.