So I have been having a lot of spare time lately at work and had these LEDs kicking around. Just put them in and was wondering if I need to get brighter ones for the center, or if I need to pull it apart and change a few more? Or brighter LEDs?

 

It looks like you didn't change the center bulbs.. or put them in backwards and they aren't lighting up.

 

I changed all the ones that were showing on the back of the cluster, between 6 or 8 ( already forgot) does anyone know if you have to open something up to get to the other ones?

I also did not think that they had to go in a certain way, just figured it would light up either way the power hit it.

 

Yeah you look like you got a few not lighting up. I did this on mine with the same style cluster as yours. What kind of LEDs did you use? Post a picture of one.

I'd say pull it apart and try it again