Thanks for the reply. That is great information to know. Is this the one that I need? Also, does it sound like a regulator to you? The blower motor is not making abnormal noise. My understanding is that if the blower motor is not making noise usually it will not take out the blower regulator. It could have been caused by dirty cabin filters.

MB# 1408218351
MB# 1408218451

Blower Regulator Heater : A/C
http://www.pelicanparts.com/cgi-bin/ksearch/pel_search.cgi?SUPERCAT_FLAG=Y&make=MBZ&please_wait=N&forumid=&threadid=&command=DWsearch&descriptio n=1408218351&x=9&y=10


Thanks again,
Steve

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1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)