[Cindy and Ray's Grand Tour]

I need to replace a switchable LED reading light in the bedroom above the bed. It is on 12V battery I believe. My trailer has an on/off switch next to the battery. If I turn off the battery there, can I safely change out the light without a shock? Will my 120V appliances (air conditioner) continue to run while I work on the light? I should know but I am not very mechanical at all. I bought the replacement light.