My 84 Silverado doesn't get driven much and when I checked under the hood I found a rat's nest on top of the air cleaner. After cleaning away everything I noticed that a wire had been chewed under the air cleaner. Also right below a metal tube was disconnected - but it looks like it has been this way for awhile because it is rusted. I tried to start the truck but it won't turn over. Hooked it up to another car and tried to jump it off. It shows that the battery is getting juice. I've include two pics and was wondering if someone could tell me what this wire is disconnected from and what I need to do to get it started again. Thanks.