New install - 2010 Prius (likely same as other Toyotas).
The antenna has a gray wire running next to it - does anyone know how this relates to the antenna amp built into the car? There is one - my last 2010 Prius, I put in an aftermarket Chinese thing - and after shipping back to me, it worked great (before not so). Clearly there's an issue (almost no AM, and little FM - in a large So Cal market - Orange Co). Just wondering what to do................. Bump that wire with the antenna to 12 VDC????