Does climate control and radio light up too ? Did you check for the reverse lights ? As the instrument lights and rev lights share the same circuit i think.

 

I also found this, you might want too check this out 2000 Honda Accord dash lights

 

Okie, think i found the problem, tested prove that the driver side mutiplex unit is malfunction. When you turn on the combination switch on, the mutiplex should give the circuit a ground to turn on the back LED lights and all illumination lights, but it didn't. So i made a ground wire to ground the circuit, and everything lights up normal. I don't know if it hurt anything by doing this, but i'll take my chance temporary until i could find another good used one to replace it with.
Thanx guys.

 

Did you ever find out your instrument panel lights problem
???

 

Bad driver side mutiplex control unit.