Radio Illumination
When the parking lamps or headlamps are ON, circuits E2 and L7 from the headlamp switch power the radio illumination lamps. Fuse 13, a 5 amp, in the fuse block powers circuit E2 which feeds the radio illumination lamp. Circuit El from the headlamp switch supplies power to fuse 13. Circuit L7 supplies voltage for the radio lamps. Circuit Z2 supplies the ground path for the illumination and park lamp circuits.