OK, so I think you were right about the amp drop over the wire. It just doesn't make sense to me that it would work initially and then not work 40 mins later after use. Maybe the switch is getting cooked? I put 12 V to the
PTO wire when the switch wouldn't engage it today and wamo it works. Thanks for the idea. I'm going to replace the entire cable later this week.
I found out the reason for the engine cutting out was **** ethanol fuel, drained some out and it looked like crap, wasn't even that old. I'm adding Startron to every gas tank and vehicle I own now.
I'll update when I get everything working and if I find any more bugs.