The use of a universal fault finding chart is a good way of finding the fault in most of the charging-systems on motorcycles. Go through the tests step by step, following the procedure accurately. If you're not completely sure that you have the basic knowledge required with electrical systems on motorcycles, don't do the tests yourself, but find someone experienced in this field to help you.
Click the image to enlarge.
Flowchart #1 Start Here
Flowchart #2
Flowchart #3
Flowchart #1 Start Here
Flowchart #2
Flowchart #3
As you can see from the flowchart, madalas sinasabi na cause of problem ay bad connection and as such, the connectors needs to be cleaned. Scroll down and read the my article on the wonders of using "contact cleaners".
