I have a '96 RC EFI that i just installed Screamin eagle plug wires on and noticed that the resistance was around 40K for the shorter wire and 65K for the longer one. The manual says they should be around 4K and 8K which is what the stock wires were. I only changed the wires because i liked the looks of the yellow wires better. I would have upgraded the coil except Harley and a few aftermarket products don't list one for a EFI bike. My bike is mostly stock except for exhaust, intake and a EFO. My question is are these wires with the much higher resistance going cause problems with the stock coil and or performance problems. My second thought is maybe with the increased voltage output of a high performance coil the higher resistance wire would be less of a issue. ???

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I have 06 Fat Boy and I changed to Trip. Plat. Plugs and Scremin Eagle 8 MM Plug Wires, I have not had any trouble at all, been running for 1000 miles so far so good! When I start my bike it does not turnover it exploads when I hit the starter that is what I like best! more juice to light your motor! PURPLE HAZE.

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I know there were some changes to the engine control system from '06 to '07 (the one I'm mostly familiar with). I would caution changing secondary spark stuff before determining whether or how it will impact the Delphi anti-knock mechanism, which (at least in the '07) uses circuitry within the secondary circuit to use the spark plug itself as the knock sensor.