I have a 1987 Tbird Sport, the 5L V8, that's been sitting for almost a year. The battery was new when I parked it and (as expected) was dead when I went to start it last night. I finally jumped it after about 20 minutes of charge from my truck, drove it to town, put in fresh fuel, came home and hooked it to a charger for the night. This morning, it cranked right up and I drove to work. Eight hours later, I went to come home and when I turned the key to crank it the dash lights (all digital dash) flashed for a second then everything shut off. No dash, no dinging, no interior lights, nothing. I took the battery in and had it tested, was told it was "good but discharged." After a 45 minute wait, the machine said it was charged so I took it back to my car and same thing. I followed some wiring and found the connector pictured here, could this be the cause or is it somewhere else in the ignition system or any other thoughts?
Help!!