74 Duster (318) ignition not working, not getting spark

67Dart273 said
Pay attention what you are doing connecting the ballast. It is two resistors in one assembly. Notice there is a "U" shaped index at one end. Here is a simplified diagram

View attachment 1715733905

Notice that the two connectors that are jumpered together go to the oblong hole index end. ALSO notice that there is an "U" index hole at the other end. The original factory harness connector indexed into this "U" to make sure it was connected properly. Notice the side that goes to the COIL This must be so. You can not reverse the connections on that end, as the ballast is two different resistances.

THANK YOU SO MUCH! I have two manuals and I'm going back and forth and was trying to figure out what was going on lol...

I'll send some progress pics as soon as I work on it some more.

67Dart273 said
Pay attention what you are doing connecting the ballast. It is two resistors in one assembly. Notice there is a "U" shaped index at one end. Here is a simplified diagram

View attachment 1715733905

Notice that the two connectors that are jumpered together go to the oblong hole index end. ALSO notice that there is an "U" index hole at the other end. The original factory harness connector indexed into this "U" to make sure it was connected properly. Notice the side that goes to the COIL This must be so. You can not reverse the connections on that end, as the ballast is two different resistances.

And I was wondering about that with the ballast--whether it mattered which wires were going to what end. Thanks for clearing that up. I'll make sure it's mounted properly.