All right, some news. First, the connector that I saw while installing the cathodes was for the internal modem (go figure, you can't even buy one for these G5s). This makes the BT connector MIA. I did find out why though: Apple doesn't solder the BT connector onto your motherboard if you don't buy the module from them. All the mounting posts are there, even the contacts for the module, just not the connector. Oh well, I didn't really need Bluetooth anyway, I'll just save up for the AirPort card instead.

Oh, and if you're really desperate, Smalldog will install a module for you, the catch being it costs $100 and you have to send them your G5.