My 300+ box makes a clicking or buzzing sound. Does that mean its bad?
The buzz from the 300+ is normal. It is a capacitive discharge ignition (C.D.I.) and when powered will emit an audible clicking which will change to a buzz as RPMs increase. This buzz can be particularly bothersome if the box has been mounted to the firewall or other steel body component. Using a rubber insulator or ACCEL Vibration Mount Kit (part # 49012) will absorb the vibration and quiet the noise created by the buzzing box.