im sorry i post alot of noob questions up and coming mechanic ( on my own car ) and im just very confused no matter how much acurazine research i do about these pressure switches. It just seams there is more than a third and forth and i just want to make sure there is no more i need to replace. like the one under the battery.

 

If you have 04-06, then there's only 2 pressure switches (3rd and 4th).