6. Cylinder duster is now a 340 ignition issues wants to start when you let up on the key

Sorry for being confusing. I have power to the existing ballast when not cranking but in the run position. And I have power when cranking on the yellow wire that comes from the ignition through the bulkhead in the upper right hand far right corner of the bulkhead but I don't know where it's supposed to go. I've traced it over to look like the horny lay for some reason somebody did the wiring before I got it said that they always had trouble with it starting when they let up on the ignition switch . It also only has a single ballast instead of the dual ballast that it probably came with, so I'm not sure of where the wiring should be. Of course it has electronic distributor. I just don't know if I can make it work with a single ballast or have to hook the dual ballast back up. I found this picture and it looks to me like I can just hook that yellow wire that is hot when I'm cranking it the side of the ballast that goes to the side of the coil and it would work but I'm not sure