I am not a parts expert, but just searching NOS 1971 Buick blower motor resistor came up with this on eBay. Might wanna make sure it matches. https://www.ebay.com/itm/Chevrolet-...615636&hash=item28578d9562:g:a3gAAOSwFIVaz406
Hey Ray, I have a few ORIGINAL clean, blower motor resisters. The RED is what I've found mostly on Buicks and is the best of the two I have. The BLACK one shows it may have experienced hi heat... either way, both units OHM out in 3 separate resistance values so I know they are good. Your choice $20 shipped or both for $30 shipped. Wheelz, Tampa Bay
I think I have one of those - nos - if you are not in a huge hurry. My parts are stored away, but, I will be going thru soon. Matt