I have a 1968 Buick wildcat with the original 430 I I replaced cap and rotor spark plugs and wires the coil I also bought a brand powermaster alternator and the light will not shut off can somebody please tell me this is so irritating the battery is good and it keeps draining out I took it to the auto parts store to diagnostic they said it was 100% good I put the battery back on car started right up with the alternator/generator light bright red anything will help if anyone has that with the same situation
“Gen light” Isn’t that error code 8675309? If the light is on and your new battery is draining most likely a defective alternator or voltage regulator. Sorry no electrical wiz but I try and help. P.S. put any cheapo voltmeter on the battery terminals with the car off and then fire it up to see if the voltage goes up into the 14 volt range to rule out the alternator. How old is that bat tree ? ***Double check this part # just wanted to let you know what it basically looked like***
I have the same car. Here is where I would start. I would be 100% sure that the battery terminals are clean. I would also inspect the cables themselves. If they are those replacement ends I would looks those over for the green gunk. If in doubt I would disconnect both from battery and get a cup of baking soda and water to clean each one. (Don't get any of that on your battery as it could ruin it). Check the far end of the ground cable to be sure it is clean and tight. I assume you bought alternator to fix the light being on so I would guess that leaves wiring or the voltage regulator as the most likely causes. The voltage regulator is in the driver side inside wheel well near the brake master cylinder. You can check that connection and have it tested or replace it. Of course you can see if there is a shop nearby that focuses on rebuilding starters and alternators. They are usually god at troubleshooting issues.
Not enough information. Powermaster makes a number of alternators. Which one did you install, and did you install it right? Did you disconnect the battery before installing it? Did you measure voltage across the battery with the engine running?
Why not install a 10si or a 12si alternator and loose the voltage regulator? Can you link us to the Powermaster alternator you installed? Jim
The light being operational or not has nothing to do with internal or external regulator. That's a 12SI internally regulated alternator. Did you follow these instructions? http://www.buickperformanceclub.com/alternat.htm
Something like this might work for you. https://www.ebay.com/itm/1963-74-GM...469986&hash=item3fa2160fa9:g:wQwAAOSwG8tcm8DN
That kit has different wiring at the alternator than described in the article. You'll definitely need one of these, https://www.classicindustries.com/p...MIqfqb_cK56wIVBJSzCh0r0g35EAQYASABEgLyMPD_BwE
Yes, but compare the actual wiring at the alternator, article vs. the kit. The article eliminates the white wire completely. It also wires one wire to the charging post along with the stock wire.