Bob,
I agree with tnsig. The DIY listed here is probably the best way to go, especially if you're having difficulties finding the Y cable. If you have basic wire stripping and soldering skills, the splicing of the audio cable to the camera wire is not that difficult. Feel free to PM me is you have any detailed questions about the install. Since Jag helped me install my camera, I feel I should turn around and help another member out.

Mark