97 cadillac deville bose system.

I want to replace my stock radio on my cadillac, i want to konw how hard is to add an aftermarket radio to it, my deville has the bose system, how do i bypass the amp?  why do i need to bypass it?  i was thinking of just replacing all the stock speaker, and powering with aftermarket amps,  do i need to run new wires to the speaker, or can i used the stock speaker harness,  will it work if i just  unplug factory amp and run new wires to the speaker, also is this true, do i have 2run all wire from the rear of car (acc,power,antena,etc), to the headunit.  i guess this isn't easy, but you guys are the experts here i tryed couple of shop, but they do know sh*t, they stil want to charge me 150 , i want to do it myself, but want to make sure what the easiest way to do it, here are my plans on the sytem, front speaker will be powered by headunit, rear doors and rear speaker powered by 4 channel amp, two subwoofers powered by 2 channel amp. thank for any help.

From what I rememeber the "tuner" is in the trunk and you will have to run from the front to trunk..

amplified ~usually there are ways to get to both sides of the amp (in and out) so you can do most of the bypass at the amp, if its on each speaker then its a matter getting the wires that go to the amp or unit

either way if you have never done it    its gonna be a while, and may not be easy to you

installers charge what they can get 150 isnt an overcharge in most cases cause they get a percentage 30-50

so look at it from thier eyes too   and to the  "" they dont know $#%^"   well...   ask a person that gets paid to do what you wanna have them give you the answers free and see what kinda response you get..   probly the same

I second letting them do it for the pain in the @ss percentage for dollar

BUT if you have all day for 2 days or so   get in there and get-er-done..   just be ready to toss the remaining pieces in the back seat to get to work the day after

look for another shop and have them match the price if your not confident they have a clue

You have probably one of the most problematic electrical nighmare cars out there. This is the first vehicle GM implemented class 2 data on. What I would do is this, remove the radio from your vehicle and go for a good drive and check every function in your vehicle, EVERYTHING!   Especially shift patterns and cruise control. If all is good, which I doubt, remove it and hardwire the deck. If not, relocate the deck. Now as far as the amp goes, that is class 2 data also and cannot be used as it is controlled by the computer brain. No problem for you as you are using aftermarket amps on your highs except you wanted just the rears on highs which I disagree with for sound quality. I would put the four channel on all highs and replace the speakers in the front at least with new ones. If you are correct for having four speakers in the rear, measure them for impedance. If they are Bose then they are most likely low impedance and you have to be careful with how you hook them up. If they are between one ohm to four ohm. hook them up in series to the rear channels of the amp. Four ohm or higher hook them up in parallel like you would  with aftermarket speakers.  Now if you want chimes, which I doubt, you would need to do more work to activate them. Post back if you do.

FYI. Metra makes a piece to interface these class 2 systems to keep the amps and data integrity with no relocation involved. Call them if you need more details as I have not used one yet. Funny as I live in the retirement state.