English Mike
CB750 New member
Hi all
I have a problem with my headlight on my CB750 F1 , bike starts ok but the headlight wont come on yep I tested the bulb and the fuse and the switches etc if I remove the bulb and put a test meter across the earth and ethier thre low or high beam I measure aroung 12 to 13 vdc if I then put the bulb back in the voltage drops to 0v . If I try a led bulb this will light but the voltage still drops to around 5.5vdc, I know the LED is pulling a lot less current so I am thinking the the fault is the regulator ? or rectifier ? Both ? the bike waqs working fine until last time out , any help very much appreciated thanks
I have a problem with my headlight on my CB750 F1 , bike starts ok but the headlight wont come on yep I tested the bulb and the fuse and the switches etc if I remove the bulb and put a test meter across the earth and ethier thre low or high beam I measure aroung 12 to 13 vdc if I then put the bulb back in the voltage drops to 0v . If I try a led bulb this will light but the voltage still drops to around 5.5vdc, I know the LED is pulling a lot less current so I am thinking the the fault is the regulator ? or rectifier ? Both ? the bike waqs working fine until last time out , any help very much appreciated thanks