I have searched the forum on the issue of the electric choke in my 1978 F150 fuse block labeled "CHOKE"......and the voltage at this point is 12 volt's on both side's of the fuse....(key on engine off).

I was not able to find any information about this......all I found was the choke circuit comes from the "S" (stator) terminal on back of the alt. which makes the voltage on this circuit read AC volt's.

Can some one explain how this circuit is wired and what voltage is at the choke spring plate on the carburetor.

Hopefully I have explained the issue I am having with my situation and some one can shed some knowledge on this !!

Thank's in advance : Leland

 

I do believe you want 12v at the spring plate. As far as the wiring, I'm not sure.

 

I just double checked the Ford factory wiring schematic, and the choke circuit is completely independent of the fuse block. It is an unfused circuit that goes from the alternator terminal to the choke.
The factory choke doesn't operate off of 12V. However, aftermarket carbs do operate with 12V at the choke.

 

The one thing I didn't mention is that it is a 460 out of a 1975 Lincoln with the factory 4350 motorcraft carb.

Thank you mikeo0o0o0.....glad you went the extra step to get that info.....thank you krazyness also.

Can you tell me mikeo0o0o0 what purpose the fused circuit would be used for ??

 

Not sure about which fuse you're referring to. On the schematic is a diagram of the fuse panel with the circuits each fuse protects. In the schematic none of the circuits are labeled as "choke".
Follow this link:
http://fordification.net/tech/images...ster_2of10.png
That will take you to page 2 of the schematic. In the upper left corner is the fuse panel. You can find out which fuse you're talking about and from the index below it, you can see which circuits it protects.
It's very possible this same basic panel was used in some other application (i.e. passenger car) where it was used for a choke.

 

mikeo0o0o0......this is a pic of the fuse block in my truck with the choke fuse outlined....


Please let me know if you were able to view it

 

That's fuse F7 on the schematic. According to the schematic it protects the dome, cargo, courtesy, glove box and underhood lights, also the vanity mirror and cigar lighter.

 

The letters on the fuse box are "COURT" Short for courtesy lights.

 

You must have a better picture than me. The one I'm looking at is too fuzzy to make out.

 

You just have to put on your reading glasses like I did

I couldn't tell either, but I wasn't convinced. So I went out to my truck and looked. Clearly labeled "COURT"

Found this as well

 

Thank's guy's.....mikeo0o0o0....I did what march did.....I got my wife's reading glasses and was able to see it better.

Really do appreciate you guy's helping me figure out that I'm almost blind.....LOL.....again thank yaw very much !!!!!

 

No problem, always happy to help. And march, thanks for reminding me that I'm getting oolllldd!

 

According to the schematics, the Choke wire fed from the alternator stator goes to C-210 and then C-212.

Wire is 4 W-Bk (White Black).
C-210: 2pin plug "R.H. Fender Apron, Behind Battery"
C-212: 2pin plug "In Engine Compartment Center of Dash Panel"

Hope this helps!

Also, FYI... If your considering a 3G Alternator swap, you can use it's stator wire for the choke as well.

 

We're not old. Just like our trucks..... Classics