Instrument Cluster / Carrier: Description and Operation

Circuit Description
Battery voltage is applied to the coil and contact of the tail lamp relay from fusible link (Lamp). With the light switch in the multifunction switch in PARK or HEAD, ground is provided to the tail lamp relay coil through the light switch. Battery voltage from the Left tail lamp fuse is then provided to the illumination lamps through the closed contacts of the tail lamp relay. Ground is provided to the illumination lamps through the rheostat. The rheostat controls the brightness of the illumination lamp's light.