Where can I get a CYCLOPS 15m candlepower rechargeable spotlight repaired

The only fuse is in the head of the car adapter.

https://www.manualslib.com/manual/532301/Sunforce-12v-Rechargeable-10-Million-Candle-Power-Spotlight.html?page=4#manual

https://www.google.com/search?q=motor+trend+10%2C000%2C000+candlepower+spotlight%2C+replace+fuse

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manufacturer or online search

The Cyclops Thor 2.5 million candlepower charger is a 7.5Volt (the battery is 6 volt) chareger, 300ma.

My Thor X 10 million candlepower spotlight takes a standard 12 volt, 1500 mA, center positive AC adaptor. You should be able to find one with an appropriate tip at any Radio Shack store, but you may find a cheaper universal adaptor at a Walmart or even at a "Dollar Plus" kind of store. An adaptor with a lower mA rating will take longer to charge your light, but it should still work (down to about 750-800 mA, I'm guessing).

Double-check the charging port of your Thor light to see whether there's any information about the input voltage requirements. On mine, the light itself has the charging port labeled for 12v, though I was reading the more detailed specifications off the adaptor itself. I can't recall whether the 2.5 million candlepower light also uses 12 volts of power (I think it does), or whether it takes 6 volts (a single battery vs. two batteries wired in series).

Vector is now owned by Black and Decker since 2006, you can order one at their website, you will need to enter the model #, here is the link http://www.dewaltservicenet.com/servicenet_home.aspx?AspxAutoDetectCookieSupport=1

Vector was acquired by Black & Decker in 2006, but DeWalt carries replacement parts. I searched for yours and found this:

http://www.dewaltservicenet.com/Products/ProductDetails.aspx?pid=69407&tid=16417

You can purchase one from Black and Decker, they purchased Vector in 2006, here is the link;
http://www.dewaltservicenet.com/servicenet_home.aspx?AspxAutoDetectCookieSupport=1

Radio shack or even a local electronics store (Best Buy) they usually have universal charger for about $15.