12V Basement Lights None Come On!

[2StrokeDiesel]

My basement 12v lights won't come on, not one of them work. I made sure to check the obvious and make sure the bulbs are not blown but no help. I am assuming all of these lights come off the same circuit and that they are feed off of a single fuse. Can anyone offer any advice as to where to start in trouble shooting this problem? Thanks

[Newellin Thunder]

Many coaches have a master switch for basement lights Many times it's labeled cargo lights. Turning this switch off prevents you from running down the battery while boondocking.