Hi Cheryl,
It's an incredibly frustrating feature, but if you push the turn signal forward twice, the lights go off......until you open another door. I was camping last week and it drove me mad to keep having the lights come on, and I was concerned about my battery dying. . If you search for "Disable Perimeter Lighting" above, you'll see there are a lot of us FTC owners who are frustrated by this feature. I'll keep reading the forum with the hopes that someone, some day, will figure out a workaround.
Connie in Portland