Re: Issues with blowing fuses when getting one of my fogs working
First step is to verify if a short is present. Unhook power to the wire, and hook a ohm meter between the wire and ground. If you have continuity between the ground and the power wire (with the light unhooked) you have a short. If not wiggle the wires around to check for any change.
Second step is to verify how much power the light is pulling. I have no idea what kind of light it is, but many hid lights have capacitors and other temp storage devices to aid in starting the arc Inside the bulb. Such lights can pull a lot more power at startup then when running, causing blown fuses.
All lights should be powered through a relay. Relays can go bad and cause a short that blows fuses. It's rare and normally only happens with cheap relays, but it's something to consider.
Really it comes down to either a short, or too much amperage draw (due to malfunction, bad wiring, or overload). A couple quick tests will answer which one of those it is.