Autotrail lighting problem

[Tantalus]

Autotrail 2002 domestic lighting out. Zig unit. Suggestions please. There are 4 circuit breakers. 3 Others are working ( pump, cooker igniter, loo flush and fan. ) All lighting out.

 

[autorouter]

Are the 4 circuit breakers for the 12V circuits or the 240V circuits? It's unusual to have circuit breakers on 12V circuits - but possible. Also are the lights incandescent bulbs and/or fluorescents, or have they been converted to LED? Do you have a photo of the Zig unit?