Pulled the cowl to access the alarm that doesn't work. Cleaned out quite a mess, vacuumed the blower motor from above. Removed the bad alarm before it could cause any problems. No problems after removing the alarm. Had to purchase a wiper arm puller from local auto parts. Re assembled with anti seize just in case I have to do it again. Fan blowing better now. Lights still flash when alarm would have sounded.
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by https://www.flickr.com/photos/hans8112/, on Flickr