Yeah this is going to be a mess. I managed to get the tracks controlled by the left stick so that up moves forward, down moves backwards and left/right while moving forward or backwards results in a turn. It will pivot steer when the stick is all the way right or left. However, the turret will only move left or right when the right stick is moved up or down. I cannot get it switched to do so when moving the right stick right or left. I have zero gun elevation no matter how it's hooked up. If I move the turret control lead #3 from the Clark board to Channel #1, I get the cannon sound when pressing up on the right stick; but no turret action. I've tried moving the channels to every conceivable location and I have nothing. This is extremely strange. I knew it would be a challenge so I guess I made some progress tonight. I'll post some pictures of everything I'm working with most likely tomorrow.

I've searched all the forums and from what I can find, there are not too many people doing this so.....the fun continues.

Ultimately I would like to have the following control:

Left stick: Automotive. Tank moves forward, reverse and turns
Right stick: Turret control, gun elevation, turret rotation.
Switch 5: Headlight on and off
Switch 6: Main cannon fire
Switch 7: Machine gun fire
Switch 8: Engine start up and shutdown

Or at least something close to that. We'll see.