Cadillac Audio, Video and Security Systems Discussion, aftermarket hu ? in Item Specific Cadillac Discussion; has anyone had a successful after market install in a 99 deville or 96-99 deville (tape deck no bose) without ...
Automobile(s): Silver 1999 Sedan DeVille (base) 103,000 miles
EAST dallas, TX
Re: aftermarket hu ?
I've had an aftermarket headunit installed professionally and it didn't work. First they just used an aftermarket harness and I had no chime, no constant wire, and no switched ignition wire.
After wasting my money there, I went and did some research. I found a constant power wire under the dash(yellow for aftermarket radio). A test light comes in real handy in this situation. For a switched ignition wire(red for aftermarket radio) I tapped into the power window wire(thick pink under driver side panel) and this also retained the RAP (retained accessory power). For ground(black) I found an existing bolt under the dash. The radio would function like normal with the key and all BUT I had no chime and after awhile the car would go into sleep mode(key fob won't work, dash resets, and alarm will sound when you try to start car).
So I had to relocate the factory radio. I bought trailer wire from Walmart for around $12 and I was able to run an extension harness with power(orange), two data wires(both purple, one thick and one thin), and a ground wire(black) for the radio in the trunk. I got a factory harness from the boneyard to plug into the radio in the trunk. If you want the chime to work you'll need a speaker to mount under the dash like I did and one speaker wire from the radio to the speaker under the dash. It'll be the front left speaker output.
After everything was installed, I powered up and everything worked like normal. I had a functioning chime, I had RAP, constant power, and a switched ignition when I turned the key. And the best part of all no more sleep mode.
I did use the aftermarket harness for speaker wires and for the power antenna. It seems like alot of work but once you get everything working it's totally worth it!! You're able to play CDs and you have something nice to look at instead of an ugly TAPE player.