Map Light: Description and Operation

Circuit Operation

Position Lights
With the light switch in "PARK" or "HEAD" position, one side of "TNS" relay coil Os grounded through the light switch, energizing the relay (the other side of the coil is powered through "TNS (15 A)" fuse).

When energized, the normally open contacts of the TNS relay close, allowing battery voltage to be applied from "TAIL (10 A) RH" fuse to the RH position light and from "TAIL (10 A) LH" fuse to the LH position light. The mentioned lights illuminate.