Instrument Cluster / Carrier: Description and Operation

Power is supplied at all times
^ through 15 A fuse (No. [63] ,located in the fuse, fusible link and relay box)
^ to tail lamp relay terminals (1) and (6).
Ground is supplied to tail lamp relay terminal (2), when the lighting switch is moved to the 1ST or 2ND position. The tail lamp relay is energized.
The lighting switch must be in the 1ST or 2ND position for illumination.
The illumination control switch that controls the amount of current to the illumination system. As the amount of current increases, the illumination becomes brighter.
The chart above shows the power and ground connector terminals for the components included in the illumination system.
The ground for all the components except for rear ashtray, and rear cigarette lighter, glove box lamp and front cigarette lighter are controlled through terminals (4) and (5) of the illumination control switch and body grounds (M14) and (M47).