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Starter Solenoid on 1972 Montego GT

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texanrebel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote texanrebel Quote  Post ReplyReply Direct Link To This Post Topic: Starter Solenoid on 1972 Montego GT
    Posted: 17-January-2019 at 10:39PM
I am replacing the original Motorcraft three post solenoid (D2SF-11450-AB) with
a four post Motorcraft (D2AF-11450-AA). I am running a Pertronix Ignitor 2
and Flamethrower coil...so I also have the Pertronix bypass relay for the 
resistor in my original ignition wiring installed. Right now both the bypass relay and the connection from the ignition are wired to the third post on solenoid. With the new four post, would I relocate the bypass wire to the "I" side of the solenoid? 
I would appreciate any input, just making sure I don't hose anything up.

Is this solenoid a suitable replacement for the OEM? 1972 Montego GT, 351 CJ

Thanks,
Billy
1972 Montego GT
1977 Mercury Monarch
1988 Ford Thunderbird Turbo Coupe
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2019 at 5:50AM
My car had a four post solenoid on it.  When I wired up my relay for my Pertronix ignition, I just power the relay from the positive battery connection side with a fuse.  The trigger for the relay was the coil wire (through the resistor wire).  It worked fine for me and I use it to power my electric choke too.  I am switching to a HEI style ignition and I will use the relay in the same fashion to ensure it and the coil get 12 volts.

Edited by 72FordGTS - 19-January-2019 at 12:08PM
Vince

1972 Ford GTS Sportsroof - Survivor, One Family car

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Post Options Post Options   Thanks (1) Thanks(1)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 19-January-2019 at 7:07AM
the "I" terminal only gets full 12 volts when the solenoid is engaged while cranking...
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
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70 CHEV C10 P/U
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Post Options Post Options   Thanks (0) Thanks(0)   Quote texanrebel Quote  Post ReplyReply Direct Link To This Post Posted: 26-January-2019 at 3:25AM
I guess my next question is did Ford make car model / engine specific solenoids in 1972? I have a new (repro) Motorcraft solenoid and it was listed for a 72 full size Ford. Can't remember what engine size....didn't really know if I could use it on my intermediate with the Q code engine. Sorry for all the questions, thanks
1972 Montego GT
1977 Mercury Monarch
1988 Ford Thunderbird Turbo Coupe
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 26-January-2019 at 4:37AM
most were the same for many years only difference were 4 terminal and 3 terminal
 if you had a 3 term. you can replace it with a 4 but not the other way around
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 26-January-2019 at 7:45AM
Like John said, they weren't model specific.  The aftermarket replacement ones cover a huge number or years and models.
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote texanrebel Quote  Post ReplyReply Direct Link To This Post Posted: 26-January-2019 at 12:41PM
Great - thanks for the info everyone
1972 Montego GT
1977 Mercury Monarch
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