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Major electical issues. HELP ME!!!!

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tevans720

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Discussion starter · #1 ·
Ok I put in a new tranny t5 in a 80 mustang. As I was putting it all together I got the starter in and turned it over a few times to make sure the teeth wouldn't grind since I changed the flywheel. Everything worked fine then so I disconnected the battery again and continued to put the exhaust, driveshaft, etc... back in.

Got it all done and went to turn it over and it did for about a second then nothing. Thought it was a dead battery as I was using a work light using battery power. Come to find out the battery was fine. So I turned the key forward and the brake warning light comes on then slowly dies out then no power till I turn back the key then back forward again and again the light slowly dies out. If I turn the key to on the quickly to start she will turn over all day long but no fire. If I stop turning it over the power is gone till I turn the key back then forward again.

Also whats odd is I turn the headlights on and the brake warning light comes on not the headlights. Its the same when I push the brake pedal no brake lights just the warning light. And same with the flashers the warning light flashes. Why that warning light? I didn't touch any electrical except the one to disconnect from the starter.

Ive got something very wrong here and cant figure it out. Everything worked just fine 1 hour before hand so what could have happened?

PLEASE HELP ME!

Thanks,
Tyler
 
#2 ·
how did u check the battery, because a sumwhat dead battery can still power dash n lights and such, but when u try to crank it kills every thing, what you should try is put ur volt meter up ur battery and watch ur voltage as u attemp to crank it, if it drops below 9 volts the battery needs charge/replace.
 
#5 ·
Sounds like a bad ground somewhere. Whatever you trun on seems like it's trying to draw its ground through the path with least resistance which apparently looks like that warning light. I would clean up all your battery connections and repair/relpace your grounds where needed.
 
Discussion starter · #6 ·
I added another ground from the battery to the firewall and moved the ground to a good spot on the block. Fixed the issue. That was just too weird thought it had to be something really bad. I knew it was something dumb that I was over looking.
 
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tevans720
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