Grounding the head unit

[SweetD]

Just got a new single din deck for my protege. Is it better to ground the headunit to the chassis or to the ground lead on the factory harness?



Edit: Never mind found the info in the sticky. duh..

 

[chuyler1]

It's best to ground it directly to the chassis. The ground lead on the factory harness is very weak and often causes noise issues.

 

[R242]

I have pretty rough reception with my new hu, glad you brought this up. I bet I'm pulling all kinds of harmonics with the harness ground, not to mention the tons of other wires running down/around/behind it

 

[SweetD]

Per the stickie thread, I grounded it to the chassis. There is a vertical metal bar right behind the head unit that had a hole already there. I used a 8mm bolt/nut that I had laying around. The new deck sounds great, with no extra background electrical noise.