Well, I just replaced the bulbs for my OBC backlight today. Instead of buying the $25 light bar from Bav. Auto., I decided to get a couple of bulbs from Radio Shack and solder them in. After I took out the entire trim area surrounding the OBC, radio, and other components, all you have to do is undo the two OBC mounting screws on the right side. Then then you can just pull the light bar right out the side.
Here are some pictures of what I did:

Here is the back of the light bar circuitry. The red arrow points to one of the four connections that must be unsodlered to remove the old bulbs.

Here is a picture (sorry, it's blurry) of the new bulbs soldered into place.

Popped the board back into the white light bar, slid it into the OBC and it works great! It is ever-so-slightly dimmer than before, but only cost me $3 and took maybe an hour.
Here are some pictures of what I did:

Here is the back of the light bar circuitry. The red arrow points to one of the four connections that must be unsodlered to remove the old bulbs.

Here is a picture (sorry, it's blurry) of the new bulbs soldered into place.

Popped the board back into the white light bar, slid it into the OBC and it works great! It is ever-so-slightly dimmer than before, but only cost me $3 and took maybe an hour.
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