the reason for not using the coil hot wire is there is a resistor and voltage to the coil is 8 or 9  volts  so auto choke will not come of as it should,you could go to the hot side of the resistor to choke ,or to the ignition. i go to the hot side of the resistor easy . chock works great,lots of adjustment,

I think the confusion here is that the original question was: Why is powering the choke heater from the coil (+) terminal a no-no?  I think we all agree attaching the choke heater to the coil terminal will cause a voltage drop and an additional load on the resistor if it is still being used. Attaching the heater up-stream of the coil at the ignition switch would work. If you prefer to not add any load to the coil terminal of the ignition switch then use the accessory terminal.  The heater will be energized whenever the switch is on but this usually isn't a problem as stated in above posts.  Just my penny's worth, JEFF..................


64F100 57FAIRLANE500

I think Holley sells a Conversion kit but I can tell You from Experience the Electric Choke works fine. One of the complaints I have heard is that the Choke comes off too quickly. In warm Weather U don't need the Choke on for long. Go Electric and see what U think. I have had 2 Cars with the Electric and my Friend has same. No complaints.

  

Thanks everyone for your replies. I haven’t tackled this yet but plan on running a wire from the ignition.

I just read a recent post from Melly regarding his carb problems. I didn’t want to hijack his post so will ask the question here. He mentions he may convert to manual choke - is that something that can be done on a carb with electric choke? Just curious. If I knew then what I know now, I may have bought a carb with a manual choke...

MplsMike
'56 Parklane
Minneapolis, MN

For about $1.00 or less depending on if You already have Wire and a couple of Terminals You can run a Wire from Ignition Switch to Choke. Not sure why everyone seems to be looking for a Complex Solution when this is very Simple, Reliable,  and Cheap. Almost forgot. You need to spend a Couple of $ for an inline Fuse. Just my Opinion for what it's Worth.

  

The choke needs heat from the electric current to make it open after the engine starts. The same reasoning as a connection to  the alternator stator terminal that supplies current when the engine starts. 

The choke on a Holley sets as soon as you touch the throttle, it's spring loaded. It needs the electrical to turn it off, it heats the bi-metal spring.

Isn't the point of a choke to make it easier to start in certain conditions?  Requiring the engine to be running in order for the choke to operate doesn't seem like a solution.


Lawrenceville, GA

Airtex makes a switch that works off oil pressure so that an electric fuel pump will run only if the engine is running. It could be used to power an electric choke after the engine starts.

You can disable the Choke by loosening the 3 Screws on the black Cap and turn it to relieve Spring Tension. Makes it hard to start though.