The wife and I recently purchased a 1999 Winnebago Brave. After having it home for a week, we started it up this morning and the "Check Engine" light came on and stayed on. We called the dealership and they gave us a few suggestions, one of which was to disconnect the positive cable from the battery for an hour and then recoonect it (to reset the computer). One problem...we can't locate the battery. Any help or other suggestions?