i recently purchased a 2000 jeep grand cherokee laredo. once i drove it off the lot, all of the gauges quit working and several warning lights came on. i pulled the fuse for the instrument cluster and repleaced it. that worked for about a day. now the instruments work whenever they want to and lights randomly come off and on. i checked the battery posts, cables, grounds look ok, no bad fuses, etc... any suggestions or tests i can perform to figure this out? some people suggested the ignition switch. any thoughts? thanks.