55.2-59 wiper motor install

[SideStepper]

Need help on electric wiper motor installation on my 55, 2nd series pick-up. The stock wiper motor (with mounting bracket) has 2 Phillp head screw locations, but I am not finding a mating hole pattern bracket in the cab, under the dash. I thought that this was going to be easy, but working under the dash is always a challenge. Does anyone have a good wiper motor assembly illustration? The illustration that I found is unclear on the cab dash bracket configuration.