w124 blower resistor heat sink replacement: now fan inop.

[Ian White]

Hi All--

Car has been in the shop for a bit. I replaced the heat sink compound for the blower motor resistor as it was dried out and non-existent.

Now, I can't get the blower motor fan to operator in any fan speed.

CCU fuse 7 is good. The heat control changes the temp of vent air and placing the CCU in defrost causes the A/C compressor to engage.

I haven't checked any strip fuses or wiring but no clue what would have changed.

Any clues?