Is there an easy way to bypass the Bose System radios ?

This sounds about right to me, the Bose systems are "premium" and as such don't always share interchangeability with other systems. Wiring shouldn't be an issue, there should be a harness available that will change from Bose to non-Bose, but that might be in a perfect world.

I replaced a Bose Factory System because as time goes on the the system breaks down. The Radio section or "head unit" is actually like a preamp while the speakers have the amps attached to them. I've found that over time the door speakers dry out and blow as well as the amplifiers with them. I replaced the head unit with an Alpine CD Tuner, a seperate passive equalizer, a front amp for the door and dash speakers and a rear amp for a bass box containing two ten inch woofers behind the seats. The system pumps and the car is a 1988 convertible. I've installed many sound systems through the years and I believe that for a novice, Crutchfield can guide you through the installation process with would save you a lot of $$$ if you don't mind doing the work.

That is correct, for the most part. The Bose system is propietary and none of the components, including the speakers, can be used with any non-Bose equipment. Plus your better off using non-Bose you will get much better quality for much less $, Bose is *way* overrated.

Over a 2 year period I've had all 4 speaker amps, the radio, and the preamp rebuilt at a cost of ~$800, and that doesn't count the labor. The door speakers and radio are easily to work on, but the preamp located under and behind the glove box is next to rediculous to change. I paid someone to take this one out an replace it. The system now works well, but I'd replace the Bose system completely if I had it to do over again.