Weird Battery Drain
 

Man somebody please help me. Ok heres the story. I bought a 86 300zx (t) and it didnt have a battery so i couldnt start it. So i got a battery and the windows or none of the lights (headlights, side markers, interior, or taillights) work and the headlights would flip up and down continuly when I tried the headlight switch. So I found some bad fuses and replaced them. So I put the battery in the car and the battery voltage instantly drained. I mean I watched the voltage go from 12.4 volts to 6.5 volt in a matter of seconds. I cant figure out where to even start to look. Please somebody tell me what to do. Any and all help will do. Thanx

you got some kinda big short if your battery drops that fast. be sure it is fully charged. I'd also get the battery load tested they do it for free. I got a bad new battery and couldn't figure out the weird stuff the car did. load test showed it bad and they replaced under warranty. everything worked fine after that.

Still having issues....I still cant figure this our. I was thinking maybe the diode are bad but I cant find them.

Find out what the problem was......the battery was bad. Got it replaced

old thread. i know
 

My battery is draining while my 86 turbo is off.

The battery is almost 6 months old, but I know its good, it holds a charge. But my z is not registered yet so I do not run the engine or drive it often. I'm currently doing some maintenance before I register and drive it everyday (so it don't crap on me).

About 2 weeks ago I turned it on for the first time in about a week, and the battery was dead. So I jumped her and drove her around and watched the dash voltage build quickly and stabilze. I shut her off and she started the next day. And then I skipped a couple days and went to turn her on and the battery was dead again.

Something is draining her battery, and there are a lot of plugs with no mate, and wires that seem to just simply have been cut. Culd this be causing a drain on the battery?

Help!!