Audio Systems: No power to radio after installing an aftermarket unit, sony cdx, wire nuts

Question
Hi,

Thanks for the fast response. I checked the car's wires with a voltmeter. The ignition wire has 12V, but the battery wire only has 4V. Could this be the problem? and is there a way to fix it? Also I connected the wires from the unit to the wiring harness using wire nuts, which I've gone over a few times now to make sure the connections are good. Any thoughts. Thanks again.

- Josh

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Followup To
Question -
Hi,

I have a 1996 Honda Civic. I got tired of the radio unit that the previous owner had and decided to installing the CD player form my last car. The unit I installed is a Sony CDX C708. Right as I finished the install and was sliding the unit in, the power went dead. I checked all the connections and replaced the fuses in the car and in the back of the unit. Still no power. I also tried to reconnect the old radio, but still no power. One mistake I did make was while fumbling in the dash to hook up the connections, I put the antenna cable from the car into the remote in on the player. This seemed to reset the player, but it didn't lose power till a while afterward. Does this sound like a problem with the car's electrical or is there a quick fix. I apperciate the help. Thanks.
Answer -
Josh,
You should use a volt meter to measure the DC voltage on the hot lead and the ignition lead with the key on. If you do not have a volt meter you can use a test light. Also how did you connect the wires, I have found that in many DIY installs the owner will use electrical tape to connect the wires.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
Josh,
For the stereo to work you will need 12 volts on both wires. Check the fuse block for a blown fuse. also look in the area where the radio goes to see if you can find a fuse holder back there. Wire nuts are good to use, however you should use electrical tape on the wire nuts and onto the wires. I have seen wire nuts come loose due to vibration in the car.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net