1994 110 - open circuit

[Stringy]

Ive got a 1994 110 single cab ute and all the electrics was fine but randomly the radio, interior light and ac have stoped working.....i checked the mains power for the radio and it has open circuited somewhere....do they all run off the same main and where should i look 1st?

thank you

[Scouse]

These 3 items shouldn't be on the same circuit.

The interior lights operate off permanent power supply.
The radio has both permanent & ign supplies.
I would imagine the A/C is ign only.

Do you have the RAVE CD to check the wiring circuits?
The A/C is local fit though so it may not be in the RAVE disc.