Rifken and all,
I know no fighting we are all here to help each other.
Okay a couple of things I would like to share. I have since done another install so this makes a big total of two for me now.
Upon the first install on my Tahoe I had just a little bit of an alternator whine when the engine was running and nothing when the engine was not. The solution for me at the time was to install a Radio Shack 20 amp noise suppressor that solved the problem for me.
Note: Just today I did rewire the Tahoe so that the audio and video wires were separated to the other side of the vehicle. I did remove the Radio Shack noise suppressor and I still had that same whine. So for now the suppressor is here to stay until I can figure what to do next. Now one thing that might be having an effect on the Tahoe is the fact that I have a dual battery system with a battery isolator so it is possible that it has something to do with it as well. I will keep everyone posted.
The second install I have completed is in a 2000 Toyota Corolla. This install consists of the computer and a radio with audio inputs and a ten key keypad again with an inverter. This car had a major hum with and without the engine running. I noticed that if I grounded the computer to the car chassis that about 70% of the noise disappeared. So off again to the local Radio Shack. This time I purchased a ground loop isolator that goes inline with the RCA plugs from the computer to the car Radio. This also solved a portion about 90% of the noise disappeared so I thought okay well lets ground the computer to the chassis again and walla I would say that 100% of the noise is gone at least to my ears I hear 0 noise.
What I would like to know and please forgive me if this has been answered previously is what causes ground loop. The only thing that I can think of is that the inverter when converting the DC to AC produces the problem. What I am not understanding is why this happens in the Toyota but not the Tahoe.
I have a lot to learn but I am having fun doing it.
MP3 - DVD - GPS
[This message has been edited by Tekati (edited 11-05-2000).]