looking for wiper switch info

So I am working on a 1970 Dart GT that came with 2 speed wipers and a manual foot pump for the washer. After thinking about it I decided to get rid of the manual washer system and go to electric (fear of a malfunction dumping a quart of washer fluid in my nice freshly painted floorpan and new carpets). So I went looking for a 2 speed washer switch with the push in washer option. I found one in a bin full of salvaged wiring from other 70 Darts. The harness plugged into the switch with 2 nested plugs with a total of 6 connections, so I am assuming that this is a wiper/washer switch and indeed when you press in on the shaft it is spring loaded. Then I compared it to the switch that came with the car that had a manual washer and all the numbers are the same; 2864415 over 23199 - over a bit is another stamped number 2939 on one and 0698 on the other. When I press on the shaft of the manual pump switch, it's spring loaded too! So is there only one switch for 2 speed wipers that has provisions for an electric washer, and the manual pump ones just weren't hooked up at the reservoir???