Making 36v resistor to solid state AXE & PB-6

[gsf35099]

I'm getting ready to start changing my 36v resistor cart over to AXE controller & PB-6 POT and then upgrade to (48V at a later time). I have new 48v 400 amp solenoid & 48v F/R switch for the 48v.

I'm also installing all new 4 AWG wire (2 AWG on the B- like Alltrax tech recommended.)

Questions:
1. Until I upgrade to 48v can I keep using the 36v solenoid and F/R switch?
2. Is the PB-6 POT a (Club Car type) setting on the AXE?

The plan is to wire everything up as if I were doing the 48v upgrade but will only be running 36v until I buy new bat's. I'm pretty sure the new 48v solenoid & F/R switch will not work on 36v and I'm thinking my existing 36v items will do just fine.

Thanks