stu thats the batt, when my alt was fooked it cut everything and i never even had hazzard lights, i called the AA and when they came out the fooker started on the button ect, its the same as when ya digicamera batts are dead, ya take apic and turn the camera off and ya get a few more piccys out of it till its totally dead, remember the bats aint designed to be ran flat, they store a charge, if yan run em totally dead they ya fook em, its totally different to a mobile phone bat, there the same idea as a walkie talkie batt
cheack that fooking belt as if it was charging the bat light would be dull, if it was on bright it means its not charging
oh and thought of another thing ive had !!!!!, iuf when ya turn the car off the batt light stays on the alt is fooked and its thing that turns it off to save the charge aint working and if runninng the batt flat instead, not sure what its called but the very first time my alt died that was the reason