speedy524

I installed a after market Sony single din unit and ran the switched accessorie wire to the sunroof fuse. All worked good.
Replaced the Sony with a DVD single din unit with all the toys (TV, MP3, etc.) Works great but it is somehow interferring with the cars computer. Unit loses all power and in order to get it back I have to remove the unit and unplug the harness. After plugging it back in it works fine until I remove the detachable face of the unit and then it loses power again.
Figured out today that it is interferring with the computer when I noticed the Lock icon flashing on the dash of my Cobalt.

I have an 06 Cobalt that is nothing fancy, not SS, just your basic Cobalt.

Any info would be appreciated.
Thanks

1sty

Why did you not use the switched power from the head unit's harness?

Is it the computer or the head unit that is loosing power?

Can you goback and write this again but this time don't use the word "it"
Say what is what, i can not follow the exact problem

SS SCHGD

I have a feeling that somewhere in your harness your getting crossed up, maybe the new harness is not wired the same as the old or something. I wired up a regular Cobalt without any issues, and there is very little involvement with the Cars Computer.

iLLmaTic3s

if u wired up the single din radio i wudnt see y u are having a problem. it the wirin as the dvd one. wut did u do with ur e-brake wire? wut wiring harness are u using?

speedy524

Sorry if I confused anyone. The DVD headunit is losing the power.
I did hooked the switched power wire to the sunroof fuse because that is what I read in this forum. I wired that way with the old Sony headunit and it worked fine.
The brake wire on the DVD unit is marked B- so I just grounded it to the chasis.

iLLmaTic3s

ok thats good. did u buy the sony brand new?

speedy524

Yes the Sony was brand new, but it is not the Sony that I am experiencing the problems with. The Sony worked fine and was only a Cd headunit. I purchased a brand new single din DVD headunit and wired exactly as the sony was but it is causing problems with the Cobalt CPU. As I stated earlier, the unit loses power with the removal of the detachable faceplate and today I noticed that it causes the on dash lock icon (the one that lights up when you hit the lock button with the door open) to light up and blink after you lock the car doors. I am going to try to rewire it tomorrow but any ideas would be helpful. I am using the same wiring harness that I used with the Sony also.

blacksssc05

hmm thats weird

iLLmaTic3s

its a single din sony dvd screen. u really shudnt have a problem. if the other deck worked fine, so shud this. u just hook up another wire(ebrake to ground to bypass) well when u lock the doors yeah a yellow alarm light flashes. all the balts have that. its the anti-theft on the car. umm im not sure y u are havin problems. if the old radio worked and u just re-wired it to the new dvd deck..shudnt be a problem..there just has to be something we are missin....

1sty

This does not make sense. As written it is leading me to beleive that the DVD player/headunit (which is one pecie?) looses power when the face plate is remove..
Thats exactly what it should do.
So what it loosing power when the face plate is removed that should not be?

Or did you mean to say that you loose power and have to unattach and then reattch the DVD players face plate to get the DVD player to turn back on?

p1llar

I'm not sure if this will help at all but:

The other week i threw in 2 single din units in my base pursuit. 1 din was a alpine motorized screen with NO CD/DVD/MP3 player. The other unit was a CD/MP3/TV/DVD single din unit.

I wired everything up and took it for a test drive, i noticed if i had the screen going the heat would cut out, and if i had the heat going i couldn't use the screen.

I pulled the HAVC and if i remember correctly it was a redwire, i had to stick the power wire from the screen to that one and everything worked after that.

Not sure if this is going to help at all... good luck

1sty

what friggen wires are you guys tapping into?
Can someone point me to this "how to" or whatever it is on here that has you tapping sunroof and heater wires?