When upgrading to a larger Amperage Powertrain you should upgrade to inline fuse.
SPM Controller Programming Cable, USB 2.0, 6' No Software
Fuse, 400 Amp for 450-600 Amp Applications
Fuse, 250 Amp for 300-400 Amp Applications
Resistor, Precharge for 36 Volt 200 Amp Solenoid
Diode, 1 amp for use with 200 amp solenoid
Bracket, Mounting, Alltrax Controller to Heavy Duty Solenoid