Alternator Wiring

I just installed a 100amp Hitachi Alternator. I still want to use the external regulator but the plug designed to fit the orignal alt. did not fit (blue and black/white wires), so I had to cut both and intall spade connectors.

Here is my question...

Looking at the factory wiring diagram it appears the blue wire goes on the right when looking at the back of the alt.; however, I came across information saying the blue goes on the left prong. Does it only go on the left when running a single wire setup?

Does blue wire go on the left or right prong of the alt. when looking at the back and running extrernal reg.?

 

Why a hitachi?o No: :shock:
I need a pic,most hitachi alternators are internaly regulated.

 

I was told that it is indeed internally regulated but can be run as externally regulated. On the back of the alt, there is a ground screw, positive stud, and a plug with two prongs.

 

Whoever told you that is full of crapou:

What is the application?

The maxima uses a 90amp Hitachi unit that was such a poor design,we used to sell a Delco cs-130 to replace it back in the day.

 

Why would you want an interally regulated Hitachi alternator that could be externally regulated on an old Buick?

 

This is it right here http://www.scpraceparts.com/hitachi-gm-1-wire-100-amp-chrome-alternator.html and here http://www.carshopinc.com/product_info.php/products_id/64756/HIT-100


I would have preferred to have a Delco unit but this was the only one at HAYDEN SPEED. Actually this had MADE IN USA stamped on it and the Delco said MADE IN CHINA, and appears to be much better quality too...

Lets say that it is internally regulated and meant for 1-wire apps, how do I wire this thing up?

 

OK,it's Hitachi manufactured,but it's a delco 10SI alternator.You cant use it with your remote regulator however.

All it needs is the battery lead to the stud on the back(1 wire)no plug-in leads needed.You will have to unplug your regulator.

I build all kinds of alternators for our cars,hit the link in my signature:laugh:

 

Unless I am wrong, it appears that this alternator is a one wire unit. That means that the battery wire, used for charging, is also the wire used for voltage sensing. These units use a unique voltage regulator, which has only one connection to the vehicle. Am I missing something? This unit is internally regulated, and connecting it to another regulator is , at best, a method of keeping it from working, and at worst, a good way to start a fire. Let me know... Ray