Bad grounds, bad alternator .
For better answers , please post all the info no your coach.
More info= better answers.
If , from the " User CP " on the left end of the blue line across the top of the page , you go to the grey box " Edit Signature " and put your coach information in , the info comes up across the bottom of ever post you make and you don't have to type it in every time.
As mine does below.