Hello everyone. I just finished my MSF course last week and am currently on the hunt for my first bike. I've got a friend who has a barely-running 1976 Yamaha DT250, which he offered to let me ride in the meantime if I can get it going. The battery was dead, so I tried to jump start it. However, once I lifted up the seat I did not find a battery I recognized. The battery I saw looked like this: BUT it had no terminals and no threaded holes. The only thing it had was a red wire going in, black wire going out and those little yellow knobs. There was not any visible metal at the battery or anywhere down the wire to attach the jumper cables. How do you jump a battery with no terminals? Also, quick bonus question: The air filter is in very poor shape (disintegrating). I have (with some difficulty) tracked down an OEM air filter, but I'm wondering if I should go with an aftermarket K&N filter which can be cleaned/re-used? What does adv think?