Ok I know there's a thread on how to do this for 6th gens but I'm not sure if it's identical to 5th gens. I pulled my instrument cluster today to see what size bulbs I need and I'm a little stuck. I know the bigger bulbs are T5 (or 74) size. There are also smaller bulbs though that light up the gas light, oil light, blinkers, etc...I have no idea what size those are. I wouldn't mind writing up a thread on how to do this LED conversion if I can find out what size the smaller bulbs are. I took a pic next to the T5s for reference.

 

I'm eagerly awaiting this information, I'd love to do this to my car! That being said, I wish I could help you out with the bulb size...

 

If somebody can help me figure out what size I need to replace the smaller bulb in the pic I'll write up a nice how-to!

 

Not sure if you know what the smaller one is called...but if you do, here is a conversion chart that I found after a few moments of searching. super-bright-LEDs

 

Ok I think I figured it out (hopefully). I believe the smaller bulbs for the indicators in the dash are T5 neo-wedge bulbs! I have all of my bulbs ordered so whenever I get them in I'll write up a how-to!

 

idk how much knowledge everyone else here has but here my own 2 cents
T10 wedge bulbs are the equivalent of 194 or 168 bulbs

and by looking at the attached image it looks like the bigger bulb is a 194 or 168 and the smaller is a pc74 or something

 

Yes the larger bulb is a T10/194/168 and the smaller one is a T5 NEO-WEDGE bulb! I finally got them in, here's a pic. Of course my car went into the shop wednesday and my LEDs came in thursday...