Got the new switch today (thanks Jim/Electric Tractor!), the old
switch is definitely shot since it doesn't go click and this one does.
Swapped it in, wired it up the way I think it should be, powered up.
At first tractor did the keep running in 1 but then settled down.
However now it does not go into reverse. So more troubleshooting, I'm
wondering if maybe part of the problem is a bad secondary diode on
card 4 as well. Will check that tomorrow with a diode tester.b
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