c-50 and master car wiring

[_paralyzed_]

It says in my hacker master car speed control instructions not to use the esc's on/off switch with 12 cells, to use a reciever pack and that on/off switch will turn on or off the esc, so do i just cut off the esc's switch? I never hear a beep to be able to program it, i assume that a current limiter is set as there is no torque at take off but quite a bit of top speed, am i safe to run with no current limit? Can I program it without the beeps? Any help will be greatly appreciated. Thanks guys!