Head Unit Wiring Problem, I'm Stumped Options

[Petes_24]

Hello,

Normally I have no problems installing new head units to my car...but I have a problem this time. After my car got broken into last year I just hooked up the stock radio and it worked fine. Two days ago I got a new CD player and went to hook it up, so I connected all the wires to the Toyota wiring harness and everything should have worked...but i hooked it up and nothing, no blown fuse, no sounds at all and the new cd player wouldnt do anything. After a while of getting irritated I decided to just put back in the stock cd player for now and now that doesnt work either. Is there something I am forgetting to check? Any ideas would be appreciated because I really dont want to have to bring it in.

[vile_v]

Hello,

Normally I have no problems installing new head units to my car...but I have a problem this time. After my car got broken into last year I just hooked up the stock radio and it worked fine. Two days ago I got a new CD player and went to hook it up, so I connected all the wires to the Toyota wiring harness and everything should have worked...but i hooked it up and nothing, no blown fuse, no sounds at all and the new cd player wouldnt do anything. After a while of getting irritated I decided to just put back in the stock cd player for now and now that doesnt work either. Is there something I am forgetting to check? Any ideas would be appreciated because I really dont want to have to bring it in.

check your fuses, usually they are forgotten and are just burnt.

if thats not the case hope this helps.
http://www.the12volt.com/installbay/stereodetail/2052.html

[Petes_24]

That was my first thought and the one that makes the most sense but all are good...and the cig lighter works which runs off the same fuse.

[Racer_J]

This might sound obvious but have you plugged the antenna lead into the back of the head unit? My JVC head unit wouldn't work until I did this yet it's never been an issue on my other cars.

[jason]

did you check the 20A fuse under the hood, also, or just the 15A one by ur leg, i think those are the correct current ratings...

[Starcraftjunkie]

If you blow the 10A fuse (in my case, it was from the power antenna), the stereo won't work either. Then again, if the 10A fuse goes, you notice it right away at night, cuz the headlights/courtesy lights/dome lights go crazy.

Like people said, check all the fuses under the hood. 10A, 15A, 20A.. heck, the 7.5A too.

This post has been edited by Starcraftjunkie: Jun 21, 2007 - 3:42 AM

[Manny]

Use a multimeter on the power, acc and ground wires to see if they are hot, (or if the ground is actually grounding)
If not, then you can do 2 things:
1. Trace the wiring all the way and look for a short or any other problem.
2. Run new power wires and ground the ground wire to any metal under the dash that is connected to the frame. (The easiest IMO)

The power wire can lead off any 12v power wires that are activated by turning on the ignition. The acc power wires, which keep memory of things like your clock and last song info, require a constant 12v connection, so you would have to make sure whatever you lead off of is always hot.

Hope this help... I sometimes ramble and assume that I make sense.....