I took the LS for a road trip the other day, while driving the battery symbol would light up and turn off after a while. There is no set interval when it turns on and off, it just does. I have a 00 LS v.6. I checked the battery cable and all looks right and tight (Thanks for tip BigRig!) but still does the same stuff. I still get 13.6v while driving and at idle. Any tips?