The Ferrari 328 GTB and GTS was first introduced in 1985 and production end in 1989. The Ferrari 328 is powered by a 3.2 litre V8, 4 Valve per cylinder layout.
The following manual contains detail electrical system and wiring diagram of 1989 Ferrari 328 GTB and GTS series. This manual explains about main box (fuses and relay) operation, cable and color codes of the wiring system, alternator and starter motor diagram, fuel injection system, ignition, widescreen wiper and washer circuit, controls and displays, external lights and controls, radio, door locking actuator, heating and air conditioning system.
Find more information about 1989 Ferrari 328 GTB|GTS Electrical Wiring Diagram and Schematics here – 34 pages of PDF filetype docs. (source: cannell.co.uk).