A motorcycle rectifier is an essential component of the charging system, converting alternating current (AC) to direct current (DC) to charge the battery and power the bike’s electrical system. A faulty rectifier can lead to a number of problems, including a dead battery, dim lights, and even engine damage.
Checking the rectifier is a relatively simple process that can be done with a few basic tools. First, you’ll need to disconnect the battery. Then, use a multimeter to measure the AC voltage at the input of the rectifier. Next, measure the DC voltage at the output of the rectifier. If the DC voltage is significantly lower than the AC voltage, then the rectifier is likely faulty and needs to be replaced.