^&^Ok, I've jumped J3-2 & j3-14  pins together and sure enough switch 06 displays ( credit button )
I then decided to put a wire in each of the 2 connections on the plug and connect them to my meter and checked for continuity by opening and closing the switch, that was fine.So I the decided to restart the pin, left the J3 plug in, then jumped the J3-2 & J3-14 and bang, the game started.

I then checked the voltage at the switch, it is just over 1.1 volts. Is it fair to say that the MPU doesn't recognize the switch due to low voltage?