I took my OVP relay out, applied 12 vdc to pin 30 and pin 15 (with pin 31 to ground) and nothing to pin 87, unless I used a toothpick to move the relay contacts closed, then I had voltage to pin 87. One thing though, when I first applied the voltage to pins 30, 15, I had voltage to pin 87 for a few seconds, then I heard the relay open, and no current to pin 87. This happened a few times, then nothing to pin 87 at all unless I did the toothpick thing mentioned above. Also the diode checks good with a multimeter set on diode test, got a reading with the meter probes connected one way, but not the other like it should. Maybe the diode breaks down with current?

I tried calling an electronics components place withthe number on the diode, but of course the number didn't cross over to any thing!