I just installed aftermarket LED headlights in my Mazda 2. The low beams wipe out my FM reception. High beams, no problem. What's happening? Can I fix it? I assume the power module is some kind of switch mode regulator. Why would increasing the power output for the high beams reduce the noise output? Does the frequency change or is it the wave shape? Would a heavy duty torroid help? Series resistor? Shielding? Maybe this weekend I can get my Oscope on the job.