When you purchase the new wiper blade the package has detailed instructions on it. Or you can get the parts person who sells you the blade to change it for you. I have changed many blades for customers.
The 1991-2002 Ford Escort takes 20" drivers side and 18" passenger side replacement windshield wiper blades on the front and if applicable, a 14" rear wiper blade.
That vehicle has hook wiper arms. Find little tab on wiper blade where its inserted into the hook. Press tab and pull wiper out of hook. You may need to rotate blade to make clearance. Sometimes you have to flex the blade a little to in order to make enough room. See video for hook arms on the link below.
The 1991 Mercedes-Benz 300e has the most common hook-end wiper arms. See sources and related links below for installation videos. Also, purchase the replacement blades first and there will be additional instructions/illustrations on the replacement packages. Locate and press the tab or button where the wiper blade is inserted into the hook of the wiper arm and pull wiper blade out of hook. You may have to rotate and flex the blade to make enough clearance for the hook to pass through.
The 1991-2002 Ford Escort takes 20" drivers side and 18" passenger side replacement windshield wiper blades on the front and if applicable, a 14" rear wiper blade.
That vehicle has hook wiper arms. Find little tab on wiper blade where its inserted into the hook. Press tab and pull wiper out of hook. You may need to rotate blade to make clearance. Sometimes you have to flex the blade a little to in order to make enough room. See video for hook arms on the link below.
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The wiper motor is mounted on the left inside of the windshield frame on the same bracket as the VIN. Fold down the windshield and is fully accessible.
black box attached to the panel under the wiper switch
The windshield needs to be folded into the down position to access the wiper motor. There are a couple cut-outs in the metal of the cowl that allows access to the wiper motor & linkage. There are release bolts on either side of the windshield & of course the top needs to be off.
You can try Quadratec.com, Rockauto.com, or your local jeep dealer
The 1991 Ford Aerostar has the most common hook-end wiper arms. See sources and related links below for installation videos. Locate and press the tab or button where the wiper blade is inserted into the hook of the wiper arm and pull wiper blade out of hook. You may have to rotate and flex the blade to make enough clearance for the hook to pass through.
Was there a 1984 Oldsmobile Cutlass Calais? I see them listed at 1988-1991. Assuming that you mean "wiper blade" (blade and frame) which are replaced often rather than "wiper arm" (piece from the spindle at the hood to the wiper blade) which are rarely ever replaced, ALL 1988-1991 Oldsmobile Cutlass Calais' have 3/16" Side Lock wiper arm attachments. See Sources and Related Links below.