Glad it took care of things!
Good thing that you noticed that moisture had gotten on the coil connection and took care of it too. Not that it probably probably mattered about the RF noise you were getting, but it might have caused your vehicle to quit starting (or suddenly stopping when going down the highway)
Moisture related corrosion usually does not stop once started... why you never want to buy a vehicle that has been in a flood. Engine & mechanicals may be fine, but the electrical system will gradually go to hell by the induced corrosion. Once started, it is like a cancer, as it never stops spreading.