Ranger 2WD V6-177 2.9L (1989)
Main Relay (Computer/Fuel System): Description and Operation
Fig. 12a EEC-IV power relay applications & locations
EEC power relays are in parallel with ignition switch and provides power to the EEC module. Power relays also provide reverse battery protection and
increased load handling to improve ignition switch reliability. Refer to Figs. 12 & 12a, for EEC-IV power relay type, location and model/engine
applications.
