this problem has reoccurred 3 times over the last year. first time the machanic changed out the fuse box. ok for awhile. next occurance the gauges and lights were jumping around and the mechanic disconnected the battery cables and this worked for a short time. now the third time all gauges went haywire and the battery went totally dead , found possible battery posts connections loose? Still not repaired and rpm gauge stays all the way around. HELP