Electric choke power source

[billdogg5]

Just upgraded Holley carbs from manual to electric choke, where's the best place to get power from for choke?

Car is a 74 challenger

Thanks

[Mrbill426]

Your harness may already have a connector for that purpose adjacent to the carb.

[B5fourspeed]

I ran a wire from the fusebox thru the firewall to the choke.

[pschlosser]

I don't really need to run a new circuit and/or fused supply into the engine compartment.

As MrBill suggested, there may be something there for you to use.

I recommend using the DBL Bark BLue wire in the engine compartment.  It's a constant supply when engine is running, and its used by the factory idle-speed solenoid.  It runs right by the passenger side of the carburetor toward the distributor and hooks to the alternator.

The DBL wire is there on a 1970, but I don't have a 1974 wiring diagram to confirm it's there on your car.

[Mrbill426]

@pschlosser that is the lead I used on my '72; works just fine. 

I don't really need to run a new circuit and/or fused supply into the engine compartment.

As MrBill suggested, there may be something there for you to use.

I recommend using the DBL Bark BLue wire in the engine compartment.  It's a constant supply when engine is running, and its used by the factory idle-speed solenoid.  It runs right by the passenger side of the carburetor toward the distributor and hooks to the alternator.

The DBL wire is there on a 1970, but I don't have a 1974 wiring diagram to confirm it's there on your car.

[Bullitt-]

  My '73 already has a wire for the choke heater, think it just branches from the Blue ignition wire.
   
    Goes to the choke control switch first

[billdogg5]

Thanks for the responses,I'll be doing some digging in

[billdogg5]

Success, ran to the fuse box, thanks for the replies and help folks

[MoparCarGuy]

The 1974 Challenger Engine Wiring diagram. Choke Heater is just above dead center of page and shows the choke control posted earlier in this thread.

[Mrbill426]

I wonder about that choke control; is it somehow triggered by engine temperature to supply current to the choke heater?

The 1974 Challenger Engine Wiring diagram. Choke Heater is just above dead center of page and shows the choke control posted earlier in this thread.

[Bullitt-]

I wonder about that choke control; is it somehow triggered by engine temperature to supply current to the choke heater?

The 1974 Challenger Engine Wiring diagram. Choke Heater is just above dead center of page and shows the choke control posted earlier in this thread.

  EDIT to be more accurate..
  Quote from the factory service manual
"The electric assist choke is designed to give more rapid choke opening at about 63-degrees or greater and a slower choke opening at temperatures of about 63-degrees or below"  I read that as the electric side has no effect below 63-degrees
not what an electric choke requires from what I understand.

[Mrbill426]

Ok, so likely not a concern for the element in an electric choke to "burn out" from being energized whenever the ignition is on.

I wonder about that choke control; is it somehow triggered by engine temperature to supply current to the choke heater?

The 1974 Challenger Engine Wiring diagram. Choke Heater is just above dead center of page and shows the choke control posted earlier in this thread.

  It is a thermostat that turns off the power to the stock thermal choke heater once it reaches temperature, not what an electric choke requires from what I understand.

[chargerdon]

On my 74 i have an Edlebrock 1406 carb with the electric choke.    I simply hooked it up directly to the blue wire that was near the carb.   I presume it works...as this type it is still a mechanical choke that does close the choke plate about 80% when cold, and the power is simply to heat the bi-metallic strip faster than engine temp alone.   

I dont know if Edlebrock carbs electric choke mechanism is its own thermostat or if it is heating all the time that the key is on...   anyone know how the electric choke works on an Edlebrock carb ?   Is it thermostatic or heating all the time when key is on ?