Learned a little today about the light problem. When I first start the df and the battery is charging, the light doesn't dim when brakes are applied. After a short while in which i assume the battery is then charged, the light dims when brakes applied. Therefore, I believe the problem is due to a substandard voltage regulator . Maybe if we try a better japanese or us regulator it will solve the problem. Just my $.02 worth.
Gump out.