Why do I keep blowing relays?
Why do I keep blowing relays? most of the relays have internal contact points. inside, they might be sparking at each contact and burning up or the conductive springs are too hot due to amperage and the constant moving while flashing breaks them. How can you tell if a Christmas light fuse is blown? You can sometimes tell by sight if a fuse has blown; the metal filament inside the glass cylinder will have a break in it....Use a light tester to test each bulb individually. Replace all nonfunctioning bulbs.You can also test the bulbs without a light tester, although...