LED "cree" driving lights.

[Okiespaniels]

I'm considering an upgrade to my current sucking halogen off road/ driving lights.
I've read some reviews on certain styles of lamps and am told they use less power than halogens, but that they could reduce ones radio to pure static.

Would like some insight. Do they use less power? Can they cause a radio issue? Can one use a filter to avoid RF noise?

Thanks