I have a 1988 Mustang Gt 5.0, It was given to me by my brother. My aunt and uncle sold it to him, and as far as I know it didnt have a radio in it when they got it. I am trying to put a radio in it but the wiring harness is not there due to some stupid A$& cutting it. I went to the junk yard and got one from and '88 mustang and spliced it to the wires that are there. Red to Red, Yellow to Yellow etc.. unfortunaley I have four wires left which leads me to belive it is not the right wiring harness for the radio. I did some research and found out the preuium sound system had door speakers and the regular sound system had only dash and rear speakers. Please advise if this is true and if some one please can give me a wiring diagram, written or visual doesnt matter. Thank you.