97 4runner limited

I own a 1997 4runner, and the display for my stock stereo has lost lighting. I am trying to find replacement bulbs, but have failed. Any suggestions?

Radio shack?
Newark Electronics?

I know this is kind of late, been a while since this question has been posted on. Same problem with my 96 4Runner Limited. Since I'm into electronics I took the whole thing apart to see if I could replace bulbs. It appeared to me the backlights for the LCD were integral to the display. I would have needed to remove the sealing ring from around the display to get to the backlites. Simple answer was to keep an LCD key light in the ashtray and I just get that out to illuminate the display when needed at night. I don't think there is a simple way to change bulbs.