Hi Alpha ( and all )
I`ll make changing the battery my number one thing to do when I get home from work tomorrow, thanks very much for that info!
As for making my machine a stand-up/sit-down combo, I`m really looking forward to your help

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my VR has much much wiring too!, but all the ports on the back of the Expality 2000, seem to be taken up, apart from the joystick port; there are 2 of them, and only one is used.
I plan to make a complete wiring diagram of my system during the week, so if anyone wants, they can have.
The Format board in the Expality has joystick trimmer pots, so I guess thats something to so with it, but they could also be for the dual joystick sit down versions.
The system I want to try to re-create on my system is the steering wheel and pedal version ( as per that youtube video ).
Any help at all of how the sit-down is wired would be greatly appreciated, as well as anything else!
I will give all my info out on how I repair / upgrade my system
thanks
Simon