Hi Alfred!
Roy here. The plug question was for my 1965 230SL -- and the wire holder diagram you posted looks exactly like the one on my engine. I've already bought a set of Bosch wires, but the ends don't unscrew! So, I guess I'm looking at removing the wire tray thingie shown, however the throttle linkage rods and rod ends etc. seem to be bolted onto the thing as well...which I suspect I'll have to undo to make the switch. Does this mean having to retune all these things so fuel mixtures etc. will be proper, or is there a way to take off this wire holder loom without screwing up the linkages?
Better yet -- do you know a supplier of the "screw off" plug sets? I can send the Bosch back so no worries there!
My wish would be for a supplier of screw off wires.
All the Best,
Roy Dudley