1982 CB750SC. A few times it has failed to start after riding for a while, the battery just dies. I've replaced the battery twice. Voltage is 14 - 14.5 when revving. I've replaced the regulator (Ricks), no difference.
One thing I noticed is the voltage at the fuse box is about 2v less than the battery. I replaced the ignition switch which didn't help. The red wire to the ignition switch gets full voltage. I tried bypassing the ignition completely by putting a jumper between the red and black. But the black wire in the headlight still gets 2v less.
According to the circuit diagram the black from the ignition splits a few ways. Does anyone know where that connection is? It's not in the headlight or the side panel.
Also I put in a LED headlight and it flickers slightly even when the engine is off. So I think there's a flaky connection somewhere. I have cleaned all the block connectors in the headlight and battery area.
Of course this could all be a red herring...
One thing I noticed is the voltage at the fuse box is about 2v less than the battery. I replaced the ignition switch which didn't help. The red wire to the ignition switch gets full voltage. I tried bypassing the ignition completely by putting a jumper between the red and black. But the black wire in the headlight still gets 2v less.
According to the circuit diagram the black from the ignition splits a few ways. Does anyone know where that connection is? It's not in the headlight or the side panel.
Also I put in a LED headlight and it flickers slightly even when the engine is off. So I think there's a flaky connection somewhere. I have cleaned all the block connectors in the headlight and battery area.
Of course this could all be a red herring...
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