I think I know the answer. but just checking before I spend money. 2006 sportman 700 efi. been sitting for a while. waiting on finances allow me to buy an axle. any who. tried starting it. turned the key and nothing. gauges didn’t lightup, nothing. figured I had a dead battery. put some jumpers on it and it started. as soon as I pulled the jumpers off it would die. that would be my magneto correct?