adding a wire for my electric choke.

Street car 50A output max. Mini denso. 3 wire. IG ignition hot to regulator, L ignition lamp / fault lamp, power output stud. Dont have a part number handy sorry.

The harness i am modifying is a new 67 barracuda engine compartment harness. This setup did not come with electric choke, i like rustys idea of using the choke thermostat. Still i need to add the wire into the harness.

My carb is a carter 625 AVS with electric choke. It makes no mention of this type of device to go with the electric choke. Just says to wire it to an ignition switched hot. This being said not sure if an electric choke thermostat is needed.

Does the choke thermostat get wired in series going to the thermostat on the carb? Is it also case ground? Anybody know if i can just tap off the ign hot lead that goes to alternator sense wire (green)

Thanks
Matt