That filter is for add-ons like scanners and computers. Are there any Add-ons? You must check for shorts to frame. With battery unplugged, there should be high resistance from neg or pos battery terminal to frame 10,000 or under can be a problem. If there is nothing hooked into this, check for shorts by wiggling the harness. Coffee or soda pop in the display will also cause this.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.