immortal1 (linn)
+1y
Don't have a pic of it, but have seen on several HotRods a setup consisting of spring loaded contacts. Have seen 2 thru 4 contacts depending on your needs. Door has flat insulated surface, hinge area of cab has the spring loaded base. Close the door and you have a connection, open the door - no connection, but no wires.
p.s. if you had access to some milling equipment, your idea would be pretty sic. Only issue might be bunching up of wire within the cab at the hinge point. But I think it could be done.