Whoa now. LED won't draw more power than halogen, rather the reverse. A 55 watt halogen bulb is something like 4.5 amps, and a JW Speaker 8700 Evo 2 (which I run at the moment) is 2.5 amps.
If you're blowing fuses, you should be looking for a short or a wiring issue, in my opinion.
And never ever put a stronger fuse on if you're blowing the stock fuses. The point of a fuse is to fry before your wiring does. Putting a 15 amp in where a 5 amp should go is... less than great.