Courtesy Lamp: Description and Operation

CIRCUIT OPERATION
The ash receiver lamp receives power on the E2 circuit from the 4 Amp fuse located in the fuse block in cavity 12. The fuse receives power from the headlamp switch. Circuit E2, which is HOT at all times, also powers the Transmission Range Indicator (PRNDL) lamp.

When the headlamp switch is moved to the PARK or ON position, current flows through the fuse to the ash receiver lamp. The ground for the lamp is supplied on the Z3 circuit, and terminates at the instrument panel left center support. This circuit is also spliced in with the PRNDL lamp, the ignition switch lamp, and the glove box lamp.