what would cause me to keep blowing voltage regulators?

[luckythirteen13]

ive blown out 2 voltage regulators in the last few days and have no idea why. i have a 3g 150amp alt. i use a 2g wire to run from the alt to the battery that is in the trunk. the car runs fine. just after a short run the alt stops making power and when i check for the cause, its the regulator. i just installed my pms and am dying to get the thing tuned but my alt just keeps dying on me and its pissing me off.
the alt is out right now but just had it tested at pep boys after the new reg went in and it was making 14v no problems. i put my volt meter on my battery and it said 16v..wtf? took it to pep-boys and they tested that. came back as having just under 14v in it and passed with no problems. i plan to put my alt and sc back in tomorrow but am reluctant in fear of blowing the reg again. could the stock wires that plug into it be too old? ive had this alt on my car for about a year and no problems till just recently

 

[jrichker]

Check the grounds.

Rear mounted battery ground wiring. Follow this plan and you will have zero ground problems.

One 1 gauge or 1/0 gauge wire from battery negative post to a clean shiny spot on the chassis near the battery. Use a 5/16” bolt and bolt it down to make the rear ground. Use a 1 gauge or 1/0 gauge wire from the rear ground bolt to a clean shiny spot on the block.

One 4 gauge wire from the block where you connected the battery ground wire to the chassis ground where the battery was mounted up front. Use a 5/16” bolt and bolt down the 4 gauge engine to chassis ground, make sure that it the metal around the bolt is clean & shiny. This is the alternator power ground.

Picture courtesy timewarped1972

Crimp or even better, solder the lugs on the all the wire. The local auto stereo shop will have them if the auto parts store doesn't. Use some heat shrink tubing to cover the lugs and make things look nice.

The computer has a dedicated power ground wire with a cylindrical quick connect (about 2 ½”long by 1” diameter. It comes out of the wiring harness near the ignition coil & starter solenoid (or relay). Be sure to bolt it to the chassis ground in the same place as you bolted the alternator power ground. This is an absolute don’t overlook it item for EFI cars

 

[luckythirteen13]

sounds simple enough. ill do that as soon as i get home. hope it works, its a b***h to pull the alt from under the sc every time.
you dont by chance have a picture of that quick disconnect for the computer do you?

thanks