I have just started having a problem with my 89 5 speed. Every now and then, there's a short circuit I would guess, when I get in the car, everything is good to go, but as soon as you turn the ignition to run, the lights all dim extremely low, and theres not even enough power to crank the engine. The battery cable gets hot, and then eventually if you let it sit, it will work just fine for days. But when it does this, it usually will act up for 20-30 minutes. Any ideas on where to start looking?