The method to attach Rotary Mechanical joysticks to the GGG GP-Wiz40 Max that I use, as per the instructions with the Wiz is:
Cut the wires at the base of the connector (white block at end of wire set). Strip enough of the wires (1/2"-5/8") to allow them to be stitched together in groups of 4 wires per group.
These wires will be joined together in groups of 1-12, with group #1 having wires 1, 4, 7, 10 joined to one extension wire that will then reach the Wiz Controller in slot K(18). Wire set #2 will then take wires 2, 5, 8, 11 wired to slot M(19), etc.
The system will then need, if PC Based MAME, a program from GGG called Roto-X Profiler. This is installed, then set to desired input, then 'GO' uploaded to the PC.
The cutting of the wire harness is not a method I liked personally, but it was the simple way to get everything wired without concern. You could do as Randy T suggests and bind all the wires via the female side ot the connector then run the lines together to be grouped as noted above, but that's just tight work I would rather not bother with.
