Could bad fp rewire kill a battery?

[IgoVroom]

I did the fuel pump rewire mod, and think I reversed the 85/86 ground/power by accident.

I ran it about a month like this, the car not wanting to start and cranking very slowly but always starting. It wouldn’t start last week and lost all power, i noticed that when i took the fuse out of my new fp wire all the accessories turned back on. The battery read about 12.7v So I redid the ground wire on the relay and it worked for about a week.

Now it wouldn't start even by jumping it. In an attempt to figure out the problem I replaced a frayed ground wire on the battery and tried jump starting it, which got it started and home. As soon as I turned it off it would not start back up and there is no power to any accessories.

I re-read the vfaq and noticed I had had the 85/86 backwards so I fixed those, but the battery is still dead. No accessories turn on even with the new fp wire disconnected and the relay unplugged. The battery now reads about ~10 volts with my multimeter.

Should I try buying a new battery? I'm so frustrated with this.

 

[91turbotalon]

It sounds like you shorted it out and fryed the battery and possibly the altenator. I'd check them out and replace all thats fry'd and check your fuses

 

[91turbotalon]

also before you buy another battery take your old one to autozone and have them check it pretty sure its dead only reading 10 volt when it's not under load. try reading the volts while trying to start it.