My Ram chargers had PWs.I got a bunch from junkyard free as my buddy worked there.They were identical except for the plugs .Sopme the wires were reversed.All came from later 5th Aves.As for drilling holes I just kind of looked where the screws holding the motor was.Then used my hole saw to make a hole.Got them all real close.One thing if you remove the whole assembley to remove the motor clamp the gear.Had juts one flip on me and almost broke my hand.It was cut bad and I could not close it for a week.Rocky