Another Thermoquad Carb Question

It seems the puzzle continues! The thermoquad that I have for the 340 in my project has an electric choke similar to those used on the General's cars. I am still trying to figure out this assembly puzzle. I have found a schematic for the 73 Challenger engine harness that I was told the engine came from. The schematic shows a choke controller component. What does this component look like and how is it mounted?
Another, simpler question . . . . the carb's fuel inlet fitting is missing. What does this fitting look like? I am trying to put this project back together as close to original as I can, given that nothing about it is original, if that makes sense! The photo is reference to what I am working with. Thanks again guys!

Jim

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