Bad FM radio
My radio would not play clear when chargeing four 6 years. I found that my ALT ground was not hooked to anty thing and when chargeing the Fm was not clear both alt ang heart charger where hooked to a battery pin out of site.The moter and inverter /charger was grounded thru the starter ground,thru the motor plug with origanal wireing .one day my plug just melted off and that sent me looking for a problem. John