I have just bought a complete performance sound system option.
Does anyone know where I can get instruction to install it properly?
If you got all of the brackets, wire harnesses etc it is just a plug and play. The subwoofer goes in the passenger side footwell behind the dash. If you did not get the heater box cover you will have to get one from an 86 or later car. The early ones do not have the proper bracketry to mount the sub. The amp goes next to the console, behind the carpet on the passenger side and the wire harness install requires you to remove the drivers side windshield molding trim to route the control harness. The cabin light mounts in place of the existing one. There is a special harness connector that connects the radio, amp and in car speaker wiring.
If you need more info give me a call or try Pennocks Fiero forum on the web.
Rolland
480-807-9156