Greetings all, I had a navigation system installed in my 2006 f150, months later I'm having this problem. Horn, remote, headlights, rear backup sensor all went out, and to top it off my rear passenger door speaker caught on fire, I heard crackling sound from speaker even though no radio was on. Please, can anyone assist me with this issue . Thanks

 

Who installed? Sounds like they jacked something up

 

hey Scorge, you're probably right, it someone who I purchased the system from that recommended this person

 

Do you think you have any place to start ?

 

Is there a good starting point for trying to locate the issue ?

 

I'd retrace every bit of wire this guy touched

 

Not doubting what you heard, but impossible for a speaker to catch fire as they have no voltage at them. Have you gone thru all fuses inside and outside?