Have you got the thin magnetic pedal sensor to go with the controller because the thick old Sunlova one probably won't work with it? I don't know the E-crazyman controller, but it might have seperate switch and LED wires. Maybe, if you look at the main black and red power wires to the controller, the red might be doubled up with a thinner red one. The thinner red one normally switches the controller on and off, so you break it and send one end to the switch and a return from the switch to the other end. There might be another wire for the LEDs. Let us know how you get on. Did you check to see if you have that thin wire to your battery switch?