Yeah, those wedges 9838 linked are the bulbs I bought. I picked up 10 of them in case I got any duds (don't think I did) and I figure the other 3 can be plugged in somewhere or another on the car. I also discovered that the guy I bought the car from did in fact remove the check engine bulb, which would explain a few things... I should've noticed when I first turned the key before buying it. Stupid me.
My turn signal indicators don't work either so I'm looking for some really tiny LEDs to replace in there also. I'm getting LED happy now, figure I'll replace every bulb on the car with LED.
As far as having the bulb in backwards, you're saying that might have thrown off my temp gauge?