AEB non-bose to bose system convertion?
 

Hi
my car is 1998 AEB non bose system. front door speakers and tweeters rear deck speaker.
does not have rear door peakers. trunk ceiling lacate had 6 CD changer.
recent i bought set of bose speakers and bose Amp. front speakers and tweeters already installed. a few days later i will going to install remain speakers and amp too. but i was wondering i didn't remove yet rear door panel. is my inside rear doors exist speakers harness and speakers hausing? if not how can i modify? and i looked up trunk Amp harness
but i can't find out. if my car does not have amp harness how should i buy? and how can i install it also where is amp harness going to connect? head deck?

anyone know please let me know how can i install amp + where should i buy bose amp wiring harness
thanks