I think my pump might be dead......

Thanks for the insight Poconos - I'm used to dealing with DC motors, so brushes are what I'm used to, either way, it's a dirty contact related issue, not a worn out scenario.
What I find works well for cleaning any type of contact is a variety of erasers.
If you're dealing with circuit board contacts such as PC cards, the red type of eraser found on the end of a pencil is best, it's not too abbarsive, buff the part after erasing with a cloth to remove the rubbery film it it leaves behind. For contacts that can take a bit more "abuse", the blue gritty ink erasers work really well, they're like a fine sandpaper. What's nice is erasers don't take off a whole lot of the coating, just enough to get things like new again without reducing the lifespan of the part significantly.

The eraser trick works well for card edge connectors but the switch contacts are too close together. I posted a pic in the thread I referenced earlier in post #5 of this thread. Back end of a Hayward pump motor. A cheap set of jewlers files will work fine. Otherwise some 400 grit wet-or-dry sandpaper, available at auto stores, works well. Again, you don't need to grind any material off. Cut a strip of sandpaper, double it up as in double-sided, and pull it through a couple times with slight pressure on the contacts, and that should fix it.
Al