just want to share my upgraded meter cluster to led , thanks for the idea guys .
bought the led strip from local store , here's the sample picture
at first i planned just to lay the led down like the link you shared but i just stick the led strip all around the corner since it has a little bit of space which it fit perfectly. for the wiring , i just soldered it directly at the t10 bulb socket (red wire to positive side and black to the grounding side) and that's it .
here is the before and after
before, with t10 led
after, with led strip ( the colour slightly off maybe because of my camera effect , actually its pretty nice in reality , you get the idea)
hopefully this thread will be helpful to those who wanted to upgrade their meter cluster light . thanks for the idea @Banjo