gauge and center console lights

[starscreem]

hey guys i have a problem were none of my dash or center console wont turn on but all my head lights and turn signals work right. now i have all my gauges looped in to my illumination wire off my radio (i mean my boost gauge and my speed and tach glow over lays ) and those work fine when i turn on my lights my question is, is there a relay i am over looking or could my dimmer switch be bad. i have been dealing with it for a couple years but am finally sick of it and am in the middle of getting the car running again and this is something i want to fix while im at it if i can

and yes i have checked the fuses that's why i am stumped