Gauge cluster lights not working!!!!!!

[nippon240]

I bought a s13 coupe about a month ago. When I bought the car, It still had the digital gauge cluster. Everything worked on the hud cluster except for the speedo. So I decided to switch it to analog. Once I got all the parts needed, I changed the gauge clusters out. When I turned my interior lights/parking lights on, The back lights for the water temp, speedo, tach,and fuel gauge didn't light up. So I figured It was just that gauge cluster. So I bought another one, and Installed it with all new blubs..and It still wont light up. Im stumped, because the gauge clusters work like they should, except for the fact that the back lights wont come on. So now, Im wondering if I should try and buy another analog harness or try changing my TCU. BTW, I did check all of my fuses and none were blown.....here are the things I did to try and fix the situation:

how to fix your headlight problems: 240SX Forum / 180SX Forum / Silvia Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread?id=280461&postid=4819674)
YouTube - Dash Light Help (http://www.youtube.com/watch?v=y-FvcY7DSTo)