Re: Spark plug for 125HP Force
For the boots, I used an accel solid core non-suppressive wire kit from advance auto. I cut the cables to length, cut off the old cables, stripped, etc etc, soldered together, and used some thick rubber covers I had plus some tape to insulate the solder joint. If you buy suppressive cables, you can get some screw threads and screw them into both ends of the cable for a more flush seat, but suppression is not in the design for these capacitive discharge ignitions.
I've used NGK and autolite. NGK seems to have a smaller electrode than the autolites, which doesn't really matter since the gap is the same, but it did make it harder to recover from fouling with the NGK. I prefer NGK at this point because they come with much nicer press-like washers that seem to provide a reliable seal. It gets tight maybe a half turn from set point so its compressing that washer a good amount.
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