I'm not talking about for a car. Just the standard water pump for you house. Ours won't click on when it's supposed to. First we had to hit the tank itself, and now we have to tap the box on top (I'm assuming some sort of fuse box as there are wires coming out of it). It's getting ridiculous and I'm just ready to buy a new one, but I'm not sure where all you can buy one.
Lowe's Home Depot etc. The question is why in the world are you messing with a connection junction box (ie; electricity) and water when there are professionals out there to do the troubleshooting for you.... heck maybe even save you money in the long run. It may not be the pump, but a short in the electrical.
any hardware store home depot lowes etc
All you need is a new switch. It' the pressure switch that you are refering to and if you have to hit it then it is shot. About $20 - 30 at the hardware store and easy to replace. Be certain to turn off power 1st.
It's time for a new pump, this is not an appliance that you want to worry about or cut corners with. I would recommend a plumbing supply house that has a little better quality pump. Zoeller makes a very reliable submersible, you won't have to worry for another 15 years.