Ok before I get started, I would like to make clear that I have searched and researched and perused this topic. Nothing seems to fit my problem. This is the same but different. Similar issue, different execution. Maybe help will come of this. Vehicle: 1977 Toyota Pickup SR5. 20R. Bone stock other than Weber 32/36. Weeks ago (can't remember when) the CHG light decided to come on sporadically. Truck never died. Drove plenty on it with the light or without the light, didn't make a difference since the battery was being charged just fine. First I replaced the external voltage regulator. Hey, wow! That seemed to fix it. Wait, no. No it didn't. A week later the light came on. Thought maybe a diode or brushes in the alternator were going bad, so I purchase a remanufactured part from Autozone (Duralast part#14153). And this is where it all began. Like a big dumb idiot I forgot to remove the negative from the battery before removing my alternator. Pop! Snap! F*ck! Arc ground to field post on alternator and blow my fusible link on the positive terminal of the battery (not sure if any other damages arise from this mistake). Great, now what? So I get some fusible link wire and fix that sommbitch. Ok, at least the truck starts. Now back to what I was doing. Remove the old alternator and while I have it out, I do some cleaning of the engine bay. Little degreaser, little water for rinse (covered all ignitions components and carburetor first). Then I replace the alternator with the Duralast one. Hook up connections and put the key in. Weird, the buzz doesn't sound. Turn the key to ON but not START. Weird again, my oil and brake lights don't come on (which they normally did before I start the engine). Ok...... START. F****cK!!!!!!!!!! The CHG Light is just mocking me now. Staring back at me like a red trapezoidal demon from beyond the physical plain. What now? I check all components, wires, anything. And, nothing. The truck drives just fine. But wait! There's more. I go to put it in reverse, and as I do this the CHG light brightens. When I change out of reverse, the light dims. This must be connected to the reverse lamp. Ok moving on. Turn the fan on. Click. CHG light brightens. Turn off. Click. Light dims. And a weird fizzling sound. Hmmmmmm. Fizzling sound? Yeah that's right. The stupid thing sounds like an alka seltzer, but just for a moment. And not always. Pull Parking brake lever. Same thing, minus the fizzle. Just the light brightens and dims. gyyyyYYYYAAAAAHHHHHHH!!!!!! WHAAAAAT?!?!?! I thought maybe the charge light circuit in the alternator was just bad or never fixed in the remanufactured process. I exchange for a newer one. Same part Duralast #14153. That light. That mother-trucking light is just beaming at me with its stupid ugly redness. I hate this light. I hate it so much. So I've had it with Duralast parts. It's got to be their fault all of this happened. I want mine back. I want my old one back. So I get it back from Autozone and plop it in. Because before the issue was at least somewhat better with my old one, right? Well turn the key to ON..... no buzz, no lights. grrrrr. Turn to START....Vrooom....gyyyyyyyAAAAAAAAGGGGGGGGHHHHH!!!!! That light is the bane of my existence. I must have caused some problem when I arced my alternator. I didn't mess with any wires before that so the grounds were all the same. How could a bad ground arise from all of this when the wires have been the same and in the same shape for all these years. I know this because My father purchased the truck back in 1977 and its stayed in the family. He also has every service record since then. So if anybody can help me, that'd be just wonderful. I'd rather not start tearing things apart if I don't have to. But if indeed it is a bad ground, then I might have to do that very thing. And IF it is a bad ground does anybody know where to isolate the tearing process? If I go searching, do I have to check every confounded wire? Please help all you mini truck owners. You're my only hope.