Stop in for a cup of coffee

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Mattax said:
Not sure what I can offer.
Sold my '74 Nova when I moved here.
Talk about a great car to learn on. Super simple and great access to everything.
Only electric problem it ever had was a taillight ground to rust.
I assume '72 Blazer is basically the same electrics in a bigger vehicle.
Click to expand...
Just factory connectors hanging in the air, and SMALL gauge wiring to ALT, and main feed to Vehicle Accessories...like lights, heater ETC.
 
Mopar Tim said:
Just factory connectors hanging in the air, and SMALL gauge wiring to ALT, and main feed to Vehicle Accessories...like lights, heater ETC.
Click to expand...
Gotta love 'upgrades'

Tim. My recollection is the Nova had no alt gauge, just a lamp. Like most baseline GM products just Fuel and Temperture.
Yea as far as the Alt, think that would be externally regulated in '72.
Hopefully your wiring guy didn't do like jpar and decide all positive wires should be red. :eek:
 
Delcotrons !
Because we refuse to call it an alternator
upload_2022-2-14_11-24-45.png


Delco Remy Division - Service Manuals​
 
You see they have a couple different wiring schemes depending on the regulator?
upload_2022-2-14_12-30-32.png


upload_2022-2-14_12-31-33.png


or if no idiot light, there's this
upload_2022-2-14_12-34-26.png


So much simpler.
:)
 
Mopar Tim said:
Looks like it has a internal regulator setup...
Click to expand...
Someone converted to an SI 10 or 12?
Takes a plug in the side for the wires.
upload_2022-2-14_13-5-15.png


upload_2022-2-14_13-8-4.png

One wire is the 'sense'.
The other wire is power to excite the rotor at low rpm. Once its capable of producing power the internal regulator diverts output back into the rotor as needed.

The excite wire usually comes from the ignition run.

Ammeter or no ammeter?

With no ammeter, there's a lamp and resistor in the exciter wire.
With an ammeter, there's a resistor or resistor wire.
 
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Well that's about the limit of knowledge and library for Delco systems.
I'm don't know if there was a simpler or electronic version of the regulator before GM switched to the self - exciting internal regulators.

It looks like the 5 terminal regulator may not need the indicator lamp, but the other versions might. When I see a parallel resistor, that makes me think its a back up in case the lamp burns out.
 
krazykuda said:
Ok when at rest, but when I have to walk I get winded very easily...

I'm thinking about going back to the hospital when my son wakes up from his nap and can give me a ride....
Click to expand...
Hope things get going better for you. You get healthy you hear?
 
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