I need a sampler blower for the '85 380SE. Someone mentioned in another thread that they are available at Fastlane, but I can't find it. Any recommendations besides the dealer?

Also how can I hook it up so it only runs when the heating or cooling is actually on?

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma