Hey,
I just did an upgrade on the schwinn stingray.
I have been using the lb37 controller and it still works perfect.
But, I ordered the yk42-4 controller and hooked it up.
And it keeps blowing my fuses

. I take off and start going really fast and then NO DC. I am very glad that it is only a fusebut I want to solve the problem. I have 4 inline 30Amp fuses
installed between each battery. But the yk42-4 controller
is rated at 40-100 amps

should I change all my fuses to
40 or 'or more amp fuses to handle the new voltage and amps
that the yk42-4 controller has to offer?????? It makes since to me.
i DONT wanT TO DAMAGE MY MOTOR!!!!
Also No problem with the freewheel or throttle or the batterys.
All input is appreciated
Cruh