I don't know if it matters, but I had a Evinrude 437 doing the same thing. it was turning head light bulbs into flash bulbs.\
Hello everyone..I love my J.D. sled but I can't keep a headlight in it..The factory bulb (AM52959) seems to be a GE-4492, now obsolete. This is a 60W/60W 5.5" (par46) sealed beam. I am using the common H5006 automotive bulb as a replacement. They last less than 2 minutes. Tail light works fine, on all the time, never blows out. The system is 12 VAC, (yes, AC) with a regulator which I checked and seems to be working fine, measured voltage is 12.5 AC, steady as a rock..So why is the headlight burning out so fast? I figure it MUST be vibration, but vibration level seems to be moderate and normal..Or the automotive bulb somehow does not like the AC current. Can someone tell me why the 4492 ($25 each) is so special or am I overlooking something?[/b]
I doubled the regulars thinking one might be bad. come to find out there was no chassie ground. The engine & wiring was fine, but the regulator was mounted off engine. so it was getting ground from the throttle cable, but when its being used the cable would vibrate enough to lose ground so the regulator went out of the loop. one ground strap to the chassie from the engine block solved the problem.