I feel dumb asking, but I have three attachments to my motor that look like they'd be for gauges, but all I have is oil pressure and coolant temp. I have a silver can looking thing on the back of the motor near the distributor with one wire going to it, oil pressure? I have a single wire attached to a sensor or something between my front two spark plugs on the driver's side (coolant)? And I also have something plugged in right above my oil filter with 2 or 3 wires going to it... maybe this is oil pressure? Can someone clue me in on what's what? This is a 350 by the way.