I need a schematic for this stereo so I can engineer it into my truck the stereo was given to me without anything to hook it up and I have no money to buy the wiring kit so I am going to use my Electronic Technician degree to engineer it to be able to install it in a 78' GMC High Sirrea 2500 pick up truck so i can finally have some good sound in the truck my e-mail is cj_ray@msn.com Thanks