hi can anybody give me some advice,i have a charging problem with my cb750 k6,with the lights on battery goes flat after about twenty mles,dont know if this the correct thing to do but i connected a voltmeter to the battery and it reads 12.4 volts without the lights on and down to 11.5 with them on,have tried adjusting the regulator,no difference,adjusted the points and core gap,still no change,could a rectifier be at fault,or have i got to go down the new generator route,not being an a electrical buff any help would be appreciated,it is really hard to find any secondhand parts,just mention i have just fitted a new battery.
thanks
Dave.