I have an intermittent problem with my truck, doesn't always happen but every once in a while.
Sometimes when I open the door, there is no dome lighting and no power is being supplied from the battery at all. Fool around with the battery cables and the power comes back.
The cables loosen over time for some reason. I'm wondering what could be the cause?

If frequency is an issue, it's about once every 5-6 weeks. Thanks!