The wires from the turret etc go to the control via the 8 pin wire. However, a couple may be different in the various versions. If you trace the wires from the top deck you can usually see what they're connected to. From there use the wiring diagram Kaczor posted to see what's what. You MAY need to alter the order the wires and that can be done by altering the 8-core wires: ie pin 3 top goes to pin 5 bottom (those numbers are not correct).
It's no worse than wiring an old car, especially given POs alterations over the years to replace the Lucas smoke that's escaped.
The Grantham meet is on 8th January
https://www.facebook.com/GranthamLightArmouredDivision depending on who's down someone can probably help. Or failing that Dave & Julie (Forgebear) can help you buy something else!
