I have recently purchased a 2013 Sahara seems something a little weird is going on with the headlights, they work fine in on position while driving but if I switch them to auto or turn them off when I turn off the engine they just go dim.. weirdly when engine is off they shut off when I pull the e-brake.. It is my first jeep but as I am just learning about it I am hoping to get a few ideas on what to start looking at.. any info would be greatly appreciated.