Electric Choke

[BubbaDuke]

Where does the positive side of the electric choke plug into?

[tan top]

the positive power wire for the choke ?
  that goes  to a power source  that is powered when the ignition key is on position only , ie  accessory terminal on the back of the  fuse box  , just use a piggy back spade connector ,

some connect it  to the run side of the Ballest resistor  ,   don't think this is a good idea my self   & would never do this  

[Nacho-RT74]

Run side of ballast is THE LINE to take the power. On later years in fact, this line gets up to alt brush ( double field alts ) and in the middle, gets a splice to feed the choke control

[BubbaDuke]

Thank you tan top, and Nacho.