Instrument Cluster / Carrier: Description and Operation
CIRCUIT DESCRIPTIONBattery voltage is applied at all times to the coil and contacts of the tail lamp relay from the tail lamp fuse. With the light switch (multifunction switch) in the PARK or HEAD Circuit Description position, ground is provided to the tail lamp relay coil through the light switch. Battery voltage from fuse 29 is then provided to the illumination lamps through the closed contact of the tail lamp relay. Ground is provided to the illumination lamps through the rheostat. The rheostat controls brightness of the illumination lamps.