Hello friends of the forum. I hope you can guide me to the problem that I detail below. when I start up my Renault 19 works for 30 mi / 1 hs. And then it turns on the battery light stays on for 4/5 min sometimes more and then it goes off for a while like this and does the same thing again. I would like to know what it could be if the regulator or diodes? Thank you so much!!