Gen3 Alternator Upgrade

Some info in your sig would help insure that you get the right information. The wiring
changed several times between 79 and 93. That's why it is a good idea to use the sig
under the user control panel (User CP) option. It allows you to post your car year &
mods, which help greatly when troubleshooting things. No, it is not there for us to
snoop and see any "Secrets" you have hidden away under the hood. Be a good
stangnetter and update you sig for future reference & don't keep us guessing.

The following diagram is for 87-90 model cars. It may also work for other years.

Diagram courtesy of Tmoss & Stang&2birds



See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring http://www.veryuseful.com/mustang/tech/engine/

http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

50FoxBodyGT said:

Wow, great diagrams. Thank you. Now on the G3 alternator there are 5 connections. 3 where on two black/orange wires used to go. 1 where I think the white/black goes. Then a post on the back side. Where does the third connection with the black/orange wires go? Where does the post on the back of the alternator get connected to?

Click to expand...

With your old wiring: On the connector with the two charge wires (orange/blk), you only use the stator wire. Run it to the single post on the 3G. Now seal that OEM connector up tight and forget about it.

The regulator plug just plugs and plays as I recall.

Then connect your new big cable to the alternator stud and run it to a fuse and to the solenoid's battery lug.

Good luck.