I have a 2000 Cherokee sport. Here’s my story. When it ran it would stumble as it idled and get worse the longer it idled and if it sat for more than 4 or5 days the battery would go dead. I started using my company truck so it sat for about a year, now I’m trying to bring it back to life. The battery is dead, so I tried to start it using jumper cables and it still won't start. I saw a little bit of smoke around the fuse box, so I immediately took the cables off and it stopped. I pulled the fuse box apart and looked for burnt wires and found nothing. Thinking this might take more than a few hours, I moved it into my garage I tried again about a week later with just a standalone batt. this time no smoke. I checked for spark the normal way with screw driver no spark. When I turn the key to the on position the asd relay starts buzzing. I’m sure I have a ground problem but where do I start?