Evinrude 1996 20 when running does not charge battery. Voltage at battery never goes above static battery voltage. Checked regulator with meter and it's open in all directions. Picked up a replacement at the dealer and today I checked it before installing and I get the same readings, everything is open. Did they give me a bad regulator? It looks now but it does not act like a diode should open one way, low ohm resistance the other.