Yep, that's what I found when I was troubleshooting high HC for the first time about ten years ago, and it's a better design because the constant resistance regardless of wire length means maximum energy at each plug rather than a plug at the end of longer wires being short-changed with conventional constant ohms/foot RFI suppression wire.

The consistent 2K ohm reading for all wires regardless of length had me perplexed, but I also had the single electrode Bosch Platinum plugs installed, so I replaced them with a set of H9DC and the HC emissions dropped in the next test.

Since then I've learned more about the Merc ignition system and now understand why resistor plugs are problematic as I explained previously - upsets the design voltage waveform - and reduces ignition energy at the electrode due to the addtional secondary resistance.

Again, the "problem" with the single electode Bosch Platinums is their resistance and any other resistor type plug could cause the same problems - high HC and rougher than normal idle due to misfires. The multielectrode versions are worse because of the heat sink effect of the multiple electrodes.

I keep a set of H9DC in my spare parts supply, so I have them on hand whenever they are needed.

Duke