Need help with fog lamps always blowing the fuses!!

Well I skipped my "regular" installation & decided to wire it up with a relay like it should be, well now it blows fuses as soon as I turn them on.

These are aftermarket fog lamps using H3 bulbs.
The relay & the fog lamps are using a common ground.(chassis)
The fog lamps are pulling power straight from the battery,
The relay is ran to a switch in the interior from a switched power
source.

I know that the fog lamps are pulling to much amperage (tried 15 amp & a 20 amp)& blowing the fuses but what I can figure out is why..

What are some reasons there would be too much amperage draw from the fog lamps?

help!

mike

Thanks jrichker I'll give that a shot & post back in the afternoon tomorrow.

Right now only 1 fog lamp is working any way (assuming I need a new bulb) ...

Thanks Hissin ...maybe with a fuse & some new bulbs I'll be set. A trip to wal-mart & I'll see