another project- another wiring problem!

Just for future reference to limit confusion, if the meter scale is 20k, and the meter reads 12.5, for example, then the actual resistance is 12.5k ohms, or 12,500 ohms. So please report it as 12.5k, not 12.5.

Getting a spark at coil - when you remove a grounding wire is an indication that PART of the coil is OK. But the only indication that a coil is completely OK is that it produces a good strong spark out of the coil spark wire. (Assuming the wire is good.) I am not sure I am fully understanding the question.