The Ford Taurus is an automobile manufactured by the Ford Motor Company in the United States. Originally introduced in the 1986 model year.
The following Wiring Diagram and Electrical System Circuit apply for Taurus 1990 model. Here you will find detail illustration of the entire electrical system of the vehicle including A/C Clutch Cycling Pressure Switch, A/C/Heater Function Switch, ABS Control Module, Air Bag Back-Up Power Supply, Air Bag Diag Module, Alt Output Control Relay, Alternator, Analog/SHO Instrument Cluster, Anti-Lock Motor Relay, Anti-Lock Power Relay, Backup Light Switch, Batteries, Blower Motor, Courtesy Lights, Cruise Control Servo, Electronic Engine Module, Engine Compartment, Fuse Block, etc.
Find more information about Ford Taurus Wiring Diagram and Electrical System Circuit here. (46 pages of PDF file, source: ford-taurus.narod.ru)