I am not sure about Sirius. But it effects am/fm until about 35 mph then the truck must outrun the interference. It's the strangest thing. I am going to try some ferrite chokes as soon as I get a chance. Novsight says to try the resistors they sell, but they won't fit behind the dust cover. If the ferrites don't work I will be sending the bulbs back to Amazon. Then I will try a different brand that surely won't be such a good deal.