Ok, I just found this again. You must have a bad ****on, I checked mine and it's open when at rest and closed when pushed, but ONLY at the 2 rear terminals NOT against the case. It only sees what you put in, power in one side and power out the other or ground in and out. But if you haven't bought a solenoid then buy the SS-587, it's a insulated base model and works perfect with the stock single wire grounded push ****on (will work on 12v neg ground).
I used this switch for my door solenoids. mounted it inside the wheelwell so you could'nt see it. Worked great for years...