Response to Our pool/spa and lighting was installed somewhere between 1978-1984 (Northern California, if that matters). Our spa has an 8 inch casing and the bulb and lens is shattered. I have no idea what the Voltage or Wattage is. Any suggestions on how to do determine? Is it safe to go with lower wattage? Is it more likely to be 12v vs 120v from that era?

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