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PA Performance 1G to 3G Alternator Plug Upgrade (79-85 All)

Item 95323
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Used to Upgrade from 1G to 3G Alternator
      • Retains Stock Wiring and OEM Warning Lights
      • Fits 1979 to 1985 Mustangs


      More Power. This PA Performance Alternator Upgrade Plug is needed to convert early Mustangs with a 1G Series alternator to a more powerful 3G 130 Amp alternator.

      Retains Stock Wiring And OEM Warning Lights. PA Performance incorporated a new replacement external regulator box to capture the proper circuit and retains the stock wiring harness along with their own 3-wire (3G Series) regulator plug. This kit allows you to retain the OEM warning lights and shunt type ammeter.

      Required Upgrade. All alternator power upgrades require a larger gauge (#4 or #6) wire to be run from the output of the alternator to the vehicles harness. Pa Performance recommends their 4 Gauge Premium Power Wire Kit.

      Application. This PA Performance 1G to 3G Alternator Upgrade Plug is designed for 1979 to 1985 Mustangs that are upgrading to a more powerful 3G Series 130 Amp alternator.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 Details

      MPN# 462802C

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (4)

      Write a Review

      Ratings Summary

      4.0 out of 5 overall rating from 4 customers

      • August 27, 2019

        4 1979 Other - PJM

        Nice Product, a little pricey

        Great product if you want to upgrade from 1G to 3G alternator and keep the look of an external voltage regulator. The box provides exciter power for the 3G unit without making slices or wiring changes within your factory harness. Your factory in dash amp gauge will not still not function properly. However this unit really simplifies the 3G install. I am very pleased with my purchase.

        Helpful (0)
      • March 08, 2018

        3 2017 GT350 - DonaldM

        3G Alernator plug upgrade

        I give this 3 stars because it came with no instructions. Besides letting you keep your original wiring harness I am not sure what the function is of this box and why I should use it. I was told by a PA Performance tech it's so you won't burn up your gauges but was told by another it 's so you won't burn up the 3G alternator regulator and you should install a volt meter. I could not find any detailed instructions at PA Performance web site or anywhere else on the web. This product needs better support.

        Helpful (8)
      • July 01, 2016

        5 1985 GT - Tom

        1g to 3g conversion

        Used this on my 85 GT, easy directions, less than 1.5 hrs to install, 13.5 volts at idle.

        Helpful (10)
      • July 14, 2013

        4 1985 Cobra - 4eyesonly

        Alt upgrade

        Plug and play makes upgrading 3G alt in my 85 easy thanks

        Helpful (13)

      Questions & Answers (1 answers)

      1 Top Rated Question

      I am upgrading my alternator from 1G to 3G and would like to ask if this will work on my 1970 Ford Ranchero GT.

      • Hello! The PA Performance 1G to 3G Alternator Plug Upgrade is only designed to work with 79-85 Mustangs.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Alternator Plug Upgrade Module
      • (1) Connector

      Tech Specs

      Will It Fit My Mustang

      • Other - 79, 80, 81, 82, 83, 84, 85

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