Your schematic doesn't show an electrical hookup for the choke. Looking up a choke thermostat for your 71 Charger w/440 shows that it doesn't have an electrical assist for the choke, just the exhaust cross over heat.

You have a non-stock carb and I suspect a PO added a manual choke to deal with the fact that it's incompatible with the stock choke linkage setup.

You can get a electric choke kit from Edelbrock and use the DBL wire in your schematic to power it. I usually tie into that wire at the ballast resistor, make sure you tie into the 12V side of the ballast.