Ok I need to know how to wire up my alternater on my 85 Iroc TPI. I recently had a tranny installed, and the installer accidently disconnected the small tan wire that comes out of the two wire plastic harness from the alternater............problem is he disconnected it somewhere near the main wiring harness near the firewall, and since my car was previously pack rat food, that area under the hood is really a mess, and even after looking for hours I couldn't find where it disconnected from. So anyways, he said it needs to be connected to a 12V battery source, so I connected it to the battery, and the next morning, the battery was COMPLETELY dead, I mean dead as a door **** dead. So at work a buddy said that wire needs to go to a SWITCHED 12v source, so I tested out some fuses under the dash and discovered the easiest one to tap into is the one with the thick red wiring plugged into the box that says "IGN" , that wire has 12v with the key on, and nothing with the key off...........just like the guy said I need to wire that tan wire too...........so I wired it up to that wired, and drove off. The alternater was charging good and I went to park the car, turned the key off............and the car keeps running like I didn't even turn the key!!! WTF???????????? Need help please. I suck at auto electronics. I had to unplug that "IGN" thick red wire from the fuse box that I had tapped the alt. wire into just to turn off the car. PLease don't tell me I'm going to have to do that every time I stop!

 

You're going to have to do that every time you stop. I'm willing to bet the alt is feeding that switched 12v wire a constant 12v therefore, still giving power to the ignition and whatever else should be switched 12v. You really need to find that other end of the wire that broke off Or! wire up a toggle switch for the time being so that it cuts the power from the alt feeding the switched 12v wire.

 

damn how did this get on the tranny board??? could have sworn I posted on electronics

 

i was just gunna say... not a bunch help here on a tranny board...