Finally bought a new blower motor,regulator and plastic cover to replace my burned out original in my E300 Turbo Diesel.

The new regulator is fundamentally different in that it requires a new harness.

I say bull*****,all I need to know is the right connection for the 3 wires which are in plug-in form for the replacement,but are individually connected to the OEM Aluminum frame regulator.
It may be worth mentioning the new motor mounting frame is plastic,hence the re-designed regulator.
The original had an aluminium frame with a smaller regulator.

Anyone shed some light on this "superseded conversion"?