electrical issue

[ttrand]

Intermittent gremlin causing me to despair! When I turn lights on, the van thinks it is in reverse. Even though driving forward, the 'R" is illuminated, and the reverse beeper is sounding. Back-up lights are on too. When lights are off, van behaves normally. The DRL failed recently, then this happened a couple of days later..Anyone had anything like this? I have done a search and am going to inspect the hatch boots, along with rear light cluster grounds..