[DeTomaso] GM 12SI Alternator Connection ???
Steve Liebenow
steven.liebenow at att.net
Wed Apr 6 19:23:45 EDT 2022
Guys,
Stumbling thru this "very easy" conversion......with absolutely no instructions other than for mounting the new AC pump/alt bracket. Everything after that is free? Free to find it wherever you can....... I'll stop here for the moment.
Back history: I am removing a 130Amp Ford 3G alternator and installing a 97A GM 12si version. No, I do not need all the amperage.......no EFI, no big stereo.....
SO, down to the two terminals on the alternator. #1 and #2. Bat+ is pretty evident.......duh!
This is what I can glean from Google, but who knows how good their search is these days....since I'm not looking to buy anything.....grrrrr..... I have this:
Terminal #1 appears to be for the dash lamp and will connect to the Blue/Black(Stripe) wire formerly on the voltage regulator term "I" and this needs to be "Key ON" not 100% of the time or it will drain your battery......albeit slowly.
Terminal #2 is the Voltage Sense and can be connected 100% of the time (or Key ON only if you like) which I believe is a Yellow wire, terminal "A" from the old harness.
Regulator Terminals S (Green/Red stripe) & F (Orange) are no longer used. (internal stator windings and control)
If anyone can give me a thumbs up on this, it would come in handy about now.
Now I just need to find the damned new pigtail connector that I bought a couple of days back, before I started tearing my car apart!!! It's around here somewhere...... and I'm rearranging components on my starter solenoid/coil panel to boot. Need new room for heater hose support and my inline rust filter! I don't want my heater hoses laying on the alternator!
Thanks in advance!
Steve
-------------- next part --------------
Guys,
Stumbling thru this "very easy" conversion......with absolutely no
instructions other than for mounting the new AC pump/alt bracket.
Everything after that is free? Free to find it wherever you
can....... I'll stop here for the moment.
Back history: I am removing a 130Amp Ford 3G alternator and installing
a 97A GM 12si version. No, I do not need all the amperage.......no
EFI, no big stereo.....
SO, down to the two terminals on the alternator. #1 and #2. Bat+ is
pretty evident.......duh!
This is what I can glean from Google, but who knows how good their
search is these days....since I'm not looking to buy
anything.....grrrrr..... I have this:
Terminal #1 appears to be for the dash lamp and will connect to the
Blue/Black(Stripe) wire formerly on the voltage regulator term "I" and
this needs to be "Key ON" not 100% of the time or it will drain your
battery......albeit slowly.
Terminal #2 is the Voltage Sense and can be connected 100% of the time
(or Key ON only if you like) which I believe is a Yellow wire, terminal
"A" from the old harness.
Regulator Terminals S (Green/Red stripe) & F (Orange) are no longer
used. (internal stator windings and control)
If anyone can give me a thumbs up on this, it would come in handy about
now.
Now I just need to find the damned new pigtail connector that I bought
a couple of days back, before I started tearing my car apart!!! It's
around here somewhere...... and I'm rearranging components on my
starter solenoid/coil panel to boot. Need new room for heater hose
support and my inline rust filter! I don't want my heater hoses laying
on the alternator!
Thanks in advance!
Steve
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