(ET) Cut wires, still haunted.

[Chris Zach <cz alembic crystel com>]

Ok, so in trying to figure this out I put the tractor in speed 1 
reverse, released the pedal (which always puts it into forward 1 as the 
contactors are closed) and tried cutting the diodes on card 4.

Still does it. No change, every time. It only seldom locks in when in 
forward, but always reverse.

Hm. I literally UNPLUGGED the foot pedal connector while the motor was 
running, still runs. So it's not the switches, the CC circuitry, 
something else is backfeeding the contactors.

One thing I did notice is sometimes it will run faster and slower (motor 
is in neutral). And the voltage on the contactors is only 21 volts or 
so. So maybe the fields of the 1r,2r contactors are shorted to ground or 
something inside the contactors. Problem is it would have to be a 1F/1R 
*pair* that was shorted, as it switches from reverse to forward every 
time so it's locking in both in forward and reverse. Or maybe not, maybe 
it's dropping the reverse but the forward is engaged and locks in once 
reverse drops out. I don't know....

I'd been meaning to replace them anyway, but man that is a pain in the 
REAR. Guess I better get some wrenches and get a wrenching....

C