3g Alt. swap...

KINGKAOS · Apr 11, 2009

I've been reading up on how 2 do the swap. But.. it seems 2 me that there diffirences in how 2 do the swap in each others write-ups..

So, from what I gather I need n what I need 2 do is:

-3g 200amp alt. Is this a good 1:
http://cgi.ebay.com/ebaymotors/ws/e...Track=true&ssPageName=VIP:Watchlink:middle:us

-Cut the alt. bracket.

-250amp fuse

-4ga. wire. Install the 250amp fuse within 18" of the "alt.", then go 2 the solenoid.

-4ga. ground wire from the block 2 the chassis. Do I need just 1 4ga. ground wire? or Should I change all of the grounds to a 4ga. wire?

-Splice the stator wire 2 the "small" wire on the "factory 3-wire power plug".

-Plug in the "factory" 3-wire plug into the alt. I've read that the foxes 3-wire Alt. plug is diffirent then the 3g's Alt.!?! N that I would need 2 buy a 3-wire Alt. plug from a 94'-95' GT!?!

-Plug in the stator. But dont plug in the factory 3-wire power plug... Just tape it up 2 seal it off n out of the way...

So, do I have all that right!?!

Thanx

HISSIN50 · Apr 11, 2009

Tough to follow the 2's and N's.

4 AWG is insufficient for 200 amps. Fuse for the weak link, which in this case is your charge cable.

Upgrading the rest of the power cables is your call. We assume you have a big stereo or some other reason for the 200 amp alt.

The 2 and 3G regulator plugs are the same. Plug and play.

You splice into the stator wire in the old (2G) power plug and run that to the lone port on the side of the 3G. Alternatively, you can splice into the same wire at the regulator plug (labeled S) and run the splice to the lone port. Your call.

KINGKAOS · Apr 11, 2009

HISSIN50 said:
Tough to follow the 2's and N's.

4 AWG is insufficient for 200 amps. Fuse for the weak link, which in this case is your charge cable.

Upgrading the rest of the power cables is your call. We assume you have a big stereo or some other reason for the 200 amp alt.

The 2 and 3G regulator plugs are the same. Plug and play.

You splice into the stator wire in the old (2G) power plug and run that to the lone port on the side of the 3G. Alternatively, you can splice into the same wire at the regulator plug (labeled S) and run the splice to the lone port. Your call.

Sorry for the "2's and n's" I'm used to texting...

So, your saying the 4 awg wire isn't big enough!?! Then should I go with 2 awg? or 1/0 awg?

I'm gonna have ALOT of electronics hooked-up in my stang. thats why I figured I would go with the 200 amp alt.

Thanx

DocG · Apr 11, 2009

I used 4 gauge for a 130 amp.......200 amp might require a little larger but I can't say for sure. Make sure you match the ground size to the power size.

The rest of it sounds bout right!

With the bracket....its a soft aluminum or whatever. I was able to make some score marks with a dremel and just use the old fashion hammer and chisel to knock the pieces off. But it does cut pretty easily too.

Not sure about the one you're buying, but if the top hole isn't threaded you'll need a slightly longer bolt and a nut.

Enjoy, I just did mine a week or so ago, I got one off a junked 95 for $30. I spent more on the wire than the alt.

KINGKAOS · Apr 11, 2009

Can I use the bigger power wire(2awg or 1/0awg) and use a 130 amp alt. for now?

Thanx

KyleEBK · Apr 11, 2009

I am using 4 ga for 130 amp alt but with 200 definately use 1/0 gauge

u can use thicker wire with less amperage from alternator it will not hurt anything

I did the 3 g alt swap but had to wire manually no plug n play for me but i got a 84 and it still had the voltage regulator in it and a 60 amp alt

KINGKAOS · Apr 11, 2009

Could I just add bigger awg gauge wire for the grounds. Instead of "replacing" the factory ones!?! The more grounds the better... Right?

Thanx

KyleEBK · Apr 11, 2009

prolly but if the large one came unhooked at some point it mgiht melt/burn ur lil wire up and may cause problems

KINGKAOS · Apr 11, 2009

KyleEBK said:
prolly but if the large one came unhooked at some point it mgiht melt/burn ur lil wire up and may cause problems

Gotcha! Thanx

3g Alt. swap...

KINGKAOS

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