I checked with where I bought my cut out they have a non illuminated switch might just get that.
Then to top it off I got some hids from retrosolutions and when I turn the headlights on I get so much static on the radio. When I turn them off the radio is perfect. Lost with this one.
I ran my cut out switch right from the battery , brought one hot wire through the large rubber gromet on the fire wall on the drivers side where the main wireing harnes goes through to the engin compartment, then I mounted the switch just above the e brake with an exsisting screw that was there and I used that same screw as the ground.
I have put HID's in my stock headlamps and into my FOG's . SO I have 4 ballast's running and have no issues with RF interferance. Check your grounds. I would disconnect one at a time and see if one is causeing the issue , it's a few starting points for ya.