Thanks everyone for the advice, Finally, after two evenings I've found the cause of the problem. Turned out the coil of the voltage regulator required a little adjustment. But, boy did I have trouble isolating the snag!! Kept on taking meter readings across the battery terminals with the engine running, recoded wildly fluctuating readings of between 12.8 to almost 17 volts. Disconnected the "F" terminal from the voltage regulator going to the generator field coil and was still getting readings over 16 volts when revving the engine. At this point I was thinking there was a fault in the generator, so removed it from the car & tested the resistance, that was good, 6 ohms. reinstalled the generator. Now I'm really stumped!! What could be making the generator keep showing 16 volts plus with the field coil wire disconnected!!!!! Finally out of sheer desperation I tried another meter and noticed that this one started going crazy as soon as the engine was started. I then noticed that the closer the meter was held to my Crane electronic ignition module the more the meter gave hugely erratic readings!! Well I borrowed a more expensive meter from my neighbour and hey-presto, everything was looking good, had to adjust the coil on the voltage regulator 1/2 turn and there was my 14.4 volts across the battery terminals. The moral of this story, beware of cheap meters picking up interference from your electronic ignition!! Many thanks again for all the tips, just need to wash the battery box area with baking soda in he morning, then I'm good to go!!Neil.