Thank you for the reply! I just learned about the fast idle switch on the dash today. I'm hoping that clears it up. I think the thermostat is bad, also, as it hasn't gotten to temperature. For now it's in my garage because the brakes need replacing. I've bought a bunch of maintenance items; I haven't even owned it a week, yet!
Anyway, it does not appear to be in series, there is a loom running along the length of the engine and individual wires running to each one. They appear to be pencil type. When did MB switch to the pencil type?
See here, it appears to be the pencil type. What is between the plugs?
Thank you,
Vincent