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this is how to do a alternator conversion on a 79-83 toyota miny truck. as most of u guys who run these trucks know the xternally regulated alternator leaves much to be desired. so i did some reserch and found a write up to do this but is was not veary clear so its my time to do a write up

so these are the two different brackets the top two are stock 79-83 alternator brackets  , and the bottom two are  85-95 FI trucks and cars u will need bolth  brackets on the bottom  to do this conversion 

so this is the new wireing harness from 85-95 trucks and cars with 22RE  in the frist pix the green circle in the middle is there to show you where that wire go's, that wire go's  to the main chargeing wire thats comes off the trucks harness with a green plug, cut  the end of the plug off the old chargeing wireing harness and Solder it to the new wireing harness so u can still retain the plugand play system, leave enuf wire so u can solder them together ,the seconed greeen circle is just there to tell you that wire go's the the back of the alternaor  on the post marked B. "B=battery" so  what ur gonna need to do now is just color coordinate the wires from the trucks wireing harness to the new  alternator harness  its pretty simple just put the two yellow wires from the trucks harness together  then put the yellow wire from new harness to the two yellows, solder the red wires together and do the same with the white wire and then clean every thing up  there is a white  wire with black stripe that needs grounded, just put a eyelet terminal on the end of the wire and ground that puppy where the old external reg went. there is also a black ground wire that comes off the end of the new harness that needs to be grounded on the power stering bracket i say that because this wire comes out the end of the alternator harness by the alternotor

   the seconed pix the white wire in the uper right hand corner is the main chargeing wire wit the green plug on the end u just cant see it

just don't buy any remaned alternator from say nappa, o rileys, pep boys, autozone ,etc they are no ware near as good as a stock toyota ive burned three nappa reman alternator and just got a  toyota alternator from the junk yard 21.50 good to go
 

Howdy -
Thanks for the write-up on the conversion.    This is definitely a few years later, but  I'm in a similar situation and wanting to get rid of the external regulator system.  My question about your conversion is:
Did you  convert a 40 amp alt/6-wire external reg     or     a  55 amp alt/5-wire external reg?
The 79s had the 40 amps stock, but the 55 amp was an option and changed the wiring harnass.
Just want to make sure I'm correctly dealing with all the wires in my situation.