"The trick is to tap power off the downstream side of the ballast so it opens more slowly."- Mopar To Ya... How is this accomplished? Sorry if there is a super obvious answer, don't really know much about cars.
Power in, power out at the resistor. Use a voltmeter if you have one. One side will have more voltage than the other. Electric chokes use resistance to heat up the coils, thus opening the choke. Too much voltage and it heats up too fast. I am off to work, but I can take pics of mine tomorrow if you like. Do yourself a favor and go electric choke. You never ever have to worry about a thing. Pump it and turn the key. The PO of my car bought the manual choke version and didn't install the cable. He just wired the choke wide open. This car hated mornings. I spent $75 on a choke kit and consider it the best money I have spent on this car so far.