Stock Head Unit question

[PH99TAHOE]

Go to your local junkyard, see if they have any still in vehicles that you can pull yourself. I know the one near me only charges something like $12-20 for a factory radio. Just be sure to check it (if you can) before you actually buy it. As a bonus, you can usually cut out the harness and get the whole kit and kaboodle.

Thought about that, but those small incandescent bulbs that the radios take only cost a couple bucks for 10 to 20 of them, that's why I just want to replace them. I just figured maybe somebody here has done it and knows the sizes. If not, I'll just find out the size when I remove the HU.