No significant difference for stock application.

The II has a couple of added features such as the power is cut if the key is left in the "run" position without the engine running. Has a built-in "dwell advance" feature for initial start-ups.

Both, in fact all the Ignitors, require the use of "suppressor" wires as opposed to the "solid core" wires your Benz has.

I have used them with the standard MB wires (solid core with the resistor ends) and had them work fine but the company recommends suppressor wiring.

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