Upon investigation for light switch I found it doesnt have wires or bulb leading to interior of switch. Please see photos. So I looked down into the morass of wires underneath dash pod and next to heater control expecting to find two wires and a bulb holder. But nothing at all.
Im guessing this switch gets illuminated too ?
Also what/where should I be checking first to sort out battery light on dash. Have checked blue wire to alternator and is in good condition, and everything is charging well at alt and batteries; just no light when ignition is switched on..... Im not electrically minded so respectfully please keep answers childlike simple. Thanks
Back of switch.

Electrical connectors for switch
