it seems they must as all I found have the diode and report it as stopping that from happening. Makes you wonder, if we put a solar panel on every house and left the diodes out would they glow all night preventing darness??? LOL :] I'm as big a fan of some HF stuff as anyone, but not sure I trust the little solar panels to do a very good job on an Optima. Up here in the salt bel we park our cars for the winter if we want to keep them. I'm not sure I want to be wondering what the solar panel is or is not doing all winter! -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrc II " Chronic Pain Hurts" -------------- Original message ---------------------- From: Frank Swygert <farna@xxxxxxx> = The diode just prevents the solar cell from discharging > the battery at night. Does a solar cell try to work in reverse in the dark?? > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list