8v-of-fury
Well-Known Member
Is this poor stereo wiring by installer? or a dieing voltage regulator?
Why does it appear and/or get worse when a 12v power source is being taken from the lighter?
Ground strap?
The higher the load on the alternator, the louder the interference will be. You may want to check the diodes in the alternator. If one or more fail, it can cause a whine from the radio too.
Check your coil there should be a little resistor of some sort on the postive side i think. It is there to fix your exact problem. If you dont have one. Google it im sure you'll find some info.
if its the factory stereo there is the metal ground strap from the back of the deck to the dash