Thanks for all the tips and support, you guys. I spent about an hour and a half splicing the W140 regulator into the W210 chassis harness. I am not the best with a soldering gun...but hopefully the connections are good enough and the heat-shrink tubing holds things tight.

Either way, I'm reporting success: The blower seems to be going strong, the automatic function is restored, and the car isn't burning hot in the cabin any more. Happy times.

I'll keep an eye on it for the next week or two -- I need everything in top form for an upcoming road trip! Thanks again, guys --

Cheers, John

__________________
'98 E300TD (W210) | Sold 6/09 with 205k and counting
'04 VW Touareg V10TDI

Good news. If you do have trouble with the connections, I'd recommend crimp connections made with a decent crimping tool. Klein makes a decent one.

Solder joints aren't as good as crimped joints for high-current applications (well, really for about any applications) and cheap crimp tools are not even worth using.

Good tip, Matt L. I actually crimped the two smaller signal wires using pretty good butt connectors. The big power carrying wire -- I wasn't able to find a connector big enough anywhere! So I did a splice-and-solder-and-heatshrink-wrap on it. Got any tips on an improved connection? I do think it's a little weak, and would be willing to do it properly if I could think of a better way or find a proper connector.

John

__________________
'98 E300TD (W210) | Sold 6/09 with 205k and counting
'04 VW Touareg V10TDI