How does the head unit work in a car?

How does the head unit work in a car?

The head unit is what lets you choose the audio source, set the volume, determine the specific song you want to hear or pick the radio station you want to listen to. All audio signals also start with the head unit. It generates sound from both “over the air” signals, such as radio,…

How to connect joying head unit to steering wheel?

you need to connect the key 1 or key 2 or key 1 and key 2 with your original steering wheel control wire , GND (black wire ) should be connected as well . 2) “ILLUM” wire is for button light control wire . you need to connect this “ILLUM ” wire with your original car head light wire . Then button light works .

What kind of sound does a head unit make?

It generates sound from both “over the air” signals, such as radio, and recorded formats, such as a CD and other digital media. A car head unit typically has everything but the speakers crammed into that one box in your dash — far different from a component home theater system,…

Is the CD changer recognised by the head unit?

The CD changer was recognised by the Head unit and would control it in every way a factory install would, but….always a but !!..there was a small amount of “alternator” noise or interference while the engine was running, and when the changer swapped to another disc, you could hear what was going on through the speakers.

Where to connect a wire to a switched 12v source?

I have the GM radio harness adapter but there is no red wire in the factory harness..only a 12v constant (clock/mem) and the speaker wires…no ground and no switched 12v source…both of which I had to run. I grounded the black wire to a sheet metal bracket under the dash..no problem there.

What kind of wire to use for joying head unit?

2) “ILLUM” wire is for button light control wire . you need to connect this “ILLUM ” wire with your original car head light wire . Then button light works . 3) “back ” wire offers power for your reverse camera .

you need to connect the key 1 or key 2 or key 1 and key 2 with your original steering wheel control wire , GND (black wire ) should be connected as well . 2) “ILLUM” wire is for button light control wire . you need to connect this “ILLUM ” wire with your original car head light wire . Then button light works .

Is the gmrc-01 the correct 12V harness?

You probably used a 70-2003 harness, its not correct for your application. The GMRC-01 is though. The 12volt ACCESSORY comes out of that black box. Retains the door and other warning chimes and the RAP. (You must log in or sign up to reply here.)