Long story short, via poor diagnostic procedures we now have a new Bosch motor and el cheapo resistor in our 1995 E300D. Blower motor simply stopped some time ago.

Before I rip into the center console to check the actual fan switch, I see there is a "climate control relay" listed under parts.

The A/C compressor does turn on when you put the CCU in defrost mode, but no fan.

I thought I had it reckoned as the resistor as the resistance between poles was in the millions of ohms.

Still no go. If CCU still actuates A/C, then CCU relay is OK>?

Are we looking at a new fan switch possibly?

HELP!!!