electric choke hook up?
Posting Guru
Joined: Aug 2010
Posts: 1,761
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From: Knoxville, TN
On a factory Ford setup, I believe it should be to one of the terminals on the alternator, which actually provides half-voltage (~7V), and then only when the engine is spinning. On an aftermarket setup, it would be to 12V ignition-on power.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
On the factory set up the electric assisted choke is powered by the stator terminal on the alternator through a white w/ black trace wire. The stator provides ~7 volts AC to the choke.
Aftermarket carbs use 12 volts DC to power the choke.
Although it calls for 12V DC to the choke, in the past I've used the factory hook up without problems on aftermarket carbs.
(thanks for the "hat tip" Rich
).
Aftermarket carbs use 12 volts DC to power the choke.
Although it calls for 12V DC to the choke, in the past I've used the factory hook up without problems on aftermarket carbs.
(thanks for the "hat tip" Rich
).
Postmaster
Joined: Oct 2010
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From: Northern and Southern Cal
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Fleet Owner
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From: NorCal
Switched.... That's the term I was looking for!
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Postmaster
Joined: Oct 2010
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From: Northern and Southern Cal
I'm scratching my head a little on that. IIRC Holley says that less than full voltage won't unwind the bimetal all the way. You remember anything like that?
Laughing Gas
Joined: Jul 2003
Posts: 765
Likes: 13
From: Edmond, OK
From the alternator.....
My '73 has 22k on it and the only thing that was added under the hood was an auxiliary brake line for trailer brakes. The plug that goes in the top of the alternator has a single wire closest to the front of the truck that goes to the factory electric choke.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
) and just used the factory wire, the choke seemed to work just fine. The choke opened fully and didn't seem to take any longer, so, since then, I've used the factory wiring for the choke. If nothing else, it looks a little more original, I really hate crimped wire terminals 
.
Postmaster
Joined: Oct 2010
Posts: 4,656
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From: Northern and Southern Cal
Well shut my mouth and call me sweet pea. You learn something new every day.
That's a good one to know.
I hate crimps also. I'm trying to rid myself of that affliction.
That's a good one to know.
I hate crimps also. I'm trying to rid myself of that affliction.
Elder User
Joined: Sep 2014
Posts: 862
Likes: 7
From: like subarctic, brrr man!
if using an aftermarket Electric Choke, use an oil pressure switch so the choke is heated when the engine is running. I sawed a post here somewhere about it.
The point of the connection to alternator is so the choke is only heated when the engine runs.
The point of the connection to alternator is so the choke is only heated when the engine runs.
Cargo Master
Joined: May 2009
Posts: 2,587
Likes: 47
From: Eagle River, AK
I ran my choke wire from the original alternator system, now it looks like I need to run a new one to the 3G alternator now because the wire I used no longer has power anymore.
I just installed a Hobbs Switch for the fuel pump, I could just tie into the power side of the fuel pump relay. Not a bad idea.
I just installed a Hobbs Switch for the fuel pump, I could just tie into the power side of the fuel pump relay. Not a bad idea.