PO's Alternator Conversion

Need some help figuring out what they have attempted here. I want to clean up this vipers nest.
It was working before I started the rocker arm replacement. (and should still...)
It's a Delco Remy Alternator - mounted upside down - with only two wires coming off the back post.
One (0ga) back to the battery, the red 10ga into the harness.
As the pictures show I've got (6) 'orphaned' wires.
- Green with red tape is Hot when switched. (H4)
- Black with red tape is always Hot (D4)
- White with lug - Dead (D3)
- White w/Green Stripe - Dead (E9)
- Brown with Spade Lug - Dead (A11)
- Green with Boot - TempSensor
Regulator is mounted down on the fender wall and connected into the original harness.
I've searched through 'conversions' but have not found one that matches this configuration.

Thanks, _Dan


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looks like a one wire gm alt to me most of those other wires go to the original regulator do you have the fsm? there is a good diagram in the back...

 

Ah, so it is a (1) Alternator setup. Boy the reviews on that setup aren't so hot.
We'll have to wait and see how long this setup lasts. I did some alterations to the mounts so that they would
be a tad tighter and square but I still have a slight misalignment on the pulleys.
When I get a chunk of free time I may mill out a mounting bracket to fit the Delco.
I've got the PDF of the '74 FSM that I've been using. I really should break down and buy the '73.

Thanks,
_Dan

 

Not much different between the two years the big changes were in 76

 

The emissions will be different between '73 and '74, in some details. There were other changes, not substantive. The main changes were in the full-size platform (Wagoneer, J-truck) which went to open knuckle axles and 6-lugs with optional front disk brakes in '74.

You understand that the alternator has a regulator within it? If you want to go to a 3-wire 10SI Delco (the alternator you show is a 10SI), you can buy one at any parts store cheaply. 63A rating is pretty ordinary. You'd likely be best off to absorb any core charge, and sell your 1-wire alternator. The differences in wiring a 1-wire vs. a 3-wire are very basic, and I don't see why anyone would want a 1-wire. But people like them for hot rods and such, where simplicity is wanted.

 

As stated, your alternator has a built in regulator so you don't need that Motorola or Prestolite regulator on the fender. That will get rid of three wires for you.

 

I've been using a one wire from Summit for years.
The bearings went out in it after just a short time but I replaced them and, from an electrical standpoint, it's always worked fine.

 

As long as the discussion has turned to one wire versus everything else...I replaced the stock unit with a Powermaster high amp unit, which I got for about $195. Not only do I love the simplicity of the one-wire, but the higher output is amazing. I wouldn't consider anything else.

 

3-wire also provides an amp light, if desired.

 

Thanks everyone as always! Guess it's time to educate myself on the 'one-wire' setup for the time being. I scored two other dead Delcos from a friends shop.
The have the same housing as mine and I was thinking of modifying the mounting bosses on the mill to fit my bracket. Haven't gotten around to that.
So, here's what I did the other night. Bundled them all up, ty-wrapped 'em, and hid them in tubing, rather like sweeping them under the rug, out of sight, out of mind - for now
I believe I'll go over everything when time and $$$ permits. The underside of the dash is a complete mess also and I haven't even looked at it.
I want to get her up and running and on the road.
I finished the pushrod surprise and am finishing up the new radiator/electric fan installation today - hopefully.

 

You could read the Mad Electrical articles about this topic - http://www.madelectrical.com/electricaltech/onewire-threewire.shtml

The one-wire will work fine, if you want to use it.