I have a 98 Blazer that has a battery discharge problum. The dash lights seems to have a life of thier own appearing and disappearing at will and staying on after the motor is shut off. The bright light switch is constantly on. The gauges take a life of thier own as well. They move back and forth then appear to be normal for awhile. The most prevalent of these is the Tach.
The vehicle has to be started by jump if it sits for more than a few hours providing I have driven far enough to give the battery a good charge.
Anybody have any ideas?

 

check your grounds