Wiring in electric choke

[Vaanth]

Ooooh do all Chrysler oil pressure switches use the same thread size? I've got a 67 383 and this is exactly how I want my choke to behave. At the moment, I've got it wired up to ignition on so I can't leave the key in that position for too long.

1954 - early 2000s V-8 engines, 1988 - early 2000s V-6 engines, and late 1950s six cylinder engines share the same 1/8"-27 thread size. The slant six engines differ. Your 1967 383 can use the listed switches.

 

[edbods]

1/8" Pipe thread.

1954 - early 2000s V-8 engines, 1988 - early 2000s V-6 engines, and late 1950s six cylinder engines share the same 1/8"-28 thread size. The slant six engines differ. Your 1967 383 can use the listed switches.

Yessss I know the next mod I need to do to my car lol. Thanks!

 

[Big_John]

1/8"-28 thread size

1/8-27 NPT Tapered pipe thread.

 

[Vaanth]

1/8-27 NPT Tapered pipe thread.

Typo corrected in my post. Thanks.

 

[polarnj]

wire from "upstream" (power feed from ign/key on) side to Choke +

View attachment 749606

That wouldn't be hot with key on and no engine running?

 

[polarnj]

To connect the Edelbrock electric choke to power, do the following:

Wire the electric choke negative terminal to the carburetor body, or other ground, as shown in the following image:
View attachment 749604

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Wiring Choke Directly to Ignition RUN

Wire the positive terminal into the Ignition RUN circuit of the vehicle as shown in one of the following diagrams which match your Chrysler ignition system:

Point Ignition System:
View attachment 749601

Electronic Ignition with 5-pin ECU and 4-terminal ballast resistor:
View attachment 749759

Electronic Ignition with 4-pin ECU and 2-terminal ballast resistor:
View attachment 749760

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Wiring Choke to a Choke Controller:

1973 - 1984 Chrysler vehicles used an electric assist heated choke which was connected to a choke controller. The controller varied the opening rate of the choke depending on temperature. The controller shuts off power when operating temperature is reached so power is not applied all the time.

If using the Chrysler 1973 - 1984 electric choke controller, or similar unit, wire the positive terminal as shown in one of the following diagrams which match your Chrysler ignition system:


Point Ignition System, with electric choke controller:

View attachment 749595


Electronic Ignition with 5-pin ECU and 4-terminal ballast resistor, with electric choke controller:

View attachment 749594

Electronic Ignition with 4-pin ECU and 2-terminal ballast resistor, with electric choke controller:
View attachment 749761

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Optional Choke Power Shutoff With Engine Not Running

To prevent power from being applied to the choke when the engine is off, but the key switch for Ignition RUN is on, an oil pressure switch can be added in place of the stock oil light switch, or in addition to the oil pressure sensor. Chrysler added an oil pressure switch like this in 1979 which cuts power when there is no oil pressure.

The 1979 - 1989 switch (Chrysler number 3231347, 3747431, 4186352) is a three terminal switch with one terminal connected to the dash oil light and the other two terminals in the circuit wiring to the choke control.
The following image shows the three terminal pressure switch:
View attachment 749650

Connect the switch inline between the Ignition RUN circuit and the electric choke,or choke controller as shown in the following image:
View attachment 749651

If adding to an engine with an oil pressure gauge and sensor, use a tee as shown in the following image:
View attachment 749652

Oil Light and Choke Combination Switch Part Numbers​

• Chrysler ( 1979-89 ) 3231347, 3747431, 4186352, 4267021, J3231347, J3747431
• Borg Warner S385
• CarQuest SAA4593
• Filko OP-93X
• G/P OPS 55
• Kem PS87
• Niehoff AL133T
• Rock Hill PS-132
• Standard PS-133
• Switches 2430

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That's pretty cool

 

[Fury1969WI]

That wouldn't be hot with key on and no engine running?

It would and I believe you'll find this is wired as pictured in @vannth post for 4 wire ECU car.

If i understand where you're coming from, i can see where it would be nice (esp. in hard start situations) - and maybe that how factory systems worked if the choke didn't start to heat-up/come off until engine was running. I imagine you could do that from the IGN run circuit but this has not presented a problem for me but I'm not trying to operate it in winter conditions.