Hey guys, bought a 3-gauge pillar pod..I need some cheap gauges to fill them up for now before I get the expensive ones...at autozone they have the sunpro brand...I wanted to run a oil pressure gauge, volt, and not sure about the third? But if I were to buy these..can I wire them straight from the package? I think i remember hearing the oil pressure sensor is behind the passanger front wheel by the oil filter...how would I hook this up? Thanks guys!