So, I had been using the audio adapter in one of my vehicles as an FM adapter, and just moved it to a different vehicle that has an AUX input that I can use the headphone connector for.
The issue I’m running into is that I have a very high pitched whine that changes pitch with engine speed.
It’s pretty annoying.
I tried plugging power in via the ZUS charger as well as via a different 12v USB adapter, with the same results.
Has anyone else dealt with this, and maybe have any ideas of how to fix it?