Wiper motor linkage mounting

I have went through climate controller window to service wiper linkage. Best to first disconnect neg' battery cable or seperate service disconnect at fusible link before working in/under the dash.
Be certain the wiper motor and the pitman linkage is oriented at park position or just remove those arms/blades. I saw a fellow worker do this wrong once. At switch on the wiper blades clawed fresh paint off a hood, AMC Hornet if my memory serves. Anyway...
Pull the glove box liner, reach in a remove the climate controller mounting hardware.