Hi, radio two. sorry as you can see i'm new to this. well, think it could be the alternator, i'm going to use the multimeter first to test the battery when car is running & see what the voltage is. so how do i test the alternator? as you can see i don't have much idea!!! thanks for your help & to Seanwhu, that was helpful to know that someone else has this problem. My car has done 75k so maybe this is a problem. thanks. ROSEMOUNT