<
>>

OK

You can put a cabin sw in parallel with the a/c pressure sw so you can manually work that.. or you can use a 1100K resistor across the blue sensor at the thermostat housing that will drop the cut in for high fan to 100..

Anyway , the boot problem has always been the ones under the coils..
I still would be suspect of OVP.. that might show up with the tappy tap test [ or a scope on the coil common 12v feed. for sure.]