Ok - i just installed a set of autometer temp/oil press. gauges in my camaro. the water temp one works fine (goes up to 190ish and stays there mostly (i have a 195 stat)) but the oil pressure gauge works in REVERSE. its high (around 70) at idle, and goes down to about 30 psi at speed. Any idea what I goofed up??


ty

ps - the gauge has a ground / sending unit / ignition / and light wire coming from it - 4 total.