I had my head unit put in by a audio shop and when i got my car (1993 Saab 9000 CSE Turbo) back my rear speakers dint work so i took the head unit out(because the shop would not fix it or refund me and i cant afford it) and noticed they hardwired the head unit in there was no wiring harness i need to know if anyone knows if there is a wiring harness for this car or if i have to hard wire it and if so how (color codes?) anything??

If the rear speakers worked before your new head unit was installed, then the first question is does your new head unit have the facility to feed four speakers. Some systems will only power two speakers. The Audio Shop should have rectified the fault - you paid for the installation and as the customer you have a reasonable expectation that they would do it properly and ensure that all of the existing speakers were functioning properly. It would be worth challenging them again - if they refuse you could go to Citizen's Advice Bureaux or the nearest Trading Standards Office. Alternatively, try tracing the wires back from the rear speakers to the head unit - are the wires connected up properly... at both ends (i.e., the speaker end and the head unit).

The audio shop has probably hard wired the head unit because the sockets in the back of the head unit were not compatible with the plugs that came as standard with the car. A Haynes Manual or equivalent will give the colour codes for the various wires for the audio system.

Here is a link to your audio wire harness, Good luck and keep me posted, be glad to help. http://www.carstereohelp.net/wireharness_Saab1.htm