DDM Fogs = Radio Interference

I've been running the DDM 35w fog (slim ballast) lights for about mouth now. Install was very easy plug the stock plug into the ballast two wires going to the lights. The night I instilled them I turned the key started the truck the radio came on clearly, turned on the lights and the radio on low volume has an engine whining though the radio. The stations that are faraway that came in clearly before are blank nothing there, no sound at all. The stations that came in very clear are quieter. I can switch off the fogs and the radio is fine. I’m I missing something? Or is the ballast feeding back though the wiring? Please help…….

Thanks
Kevin

 

are the lights getting dimming when this is going on? my friend had something kinda like this, and the drain of his hid's with this stereo(amp) killed his alternator

 

The light stays constant after the little warm up at the start.

 

Check your grounds.

 

+1 on the ground if you have a relay harness.

 

I installed the DDM turning HID harness last night and no change. Do I need to reverse the polarity?

 

Not at all. They wouldn't work. Try grounding it directly to the negative terminal of the battery.