Ok. So I`ve changed the brushes in the alternator. On tick over the multimeter that I connected across the battert reads around 11.76 but the voltage appears to steadily go down. When I rev the engine the meter reading goes steadily up and is now reading ( I have it running as I write) 13.02 and still rising. Am I correct in assuming that the alternator is producing a charge. I`m just wondering if the battery needs to be put on charge? Could the charge light and the fuel drain light come on if the battery was low? What do you think clever people?