Need a little help with Alternator Problem

[jcloud6]

The problem is something is damaging the internal regulator, I have replaced the alternator 3 times in a month. Each one replaced, I was told by Autozone tech that the regulator was bad.

1. I conduct tests using test light connected from negative battery post to Negative cable. The light is on.

2. I removed all fuses from fuse block, the light stayed on

3. I dis-connected the underhood harness from the fire wall to rule out the cab, the light stayed on

4. With the harness disconnected, I dis-connected the hot wires from the power relay block on the fire wall, the light stayed on.

5. With the harness and relay block disconnected, I unplugged the votage gauge (Red and Brown) from top of alternator, the light went off.

6. Is the alternator the problem?

7. Is something else damaging the internal regulator inside the alternator?

8. Is it the correct alternator? I had to match it up to fit, the autozone tech sold me an alternator for 95 camaro, because of the wide pulley.

[jdheff1982]

The plug on the alt is part of the starting system as well. The brown wire is for the dash and the red wire should go to small post on stater solenoid. My in dash voltage gauge still works and is not connected to the alt.

I went through 2 in a month. 1 was bad reg and the other diodes. It could simply be that the alts being provided by Autozone are bad.

Rehook the alt and check the batt voltage with the truck running. A bad volt reg. could inhibit charge or cause the alt to over charge the bat.

Also, if you have a multimeter, check for AC voltage in battery. If found, means the diodes have failed and the alt is dumping AC into the battery.

I would also check your connections at the starter to see if any are grounding.

Hope this helps.

[jcloud6]

Thanks, and I appreciate the help