I am getting ready to head out for the weekend in my QS 6.0. I have connected the battery and checked the telephone jack plugs - they work. However, the cigarette lighter has no power. I replaced the 15A fuse, and even got out my multimeter (for the first time) to test the socket. No voltage. I tested the plugs where the socket plugs in. No voltage. Any ideas? I'd love to be able to run a 12V cooler or my USB for cell phone charging. Thanks in advance!