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find your remote wire. it would help to know the type of car and the kind colors of wires your using as your 3 main wires.
normally in most chevy and fords they are yellow 12 volt.
black as ground.
red sometimes even a tan as your remote start.
deff check your start
You need to run the RCA cables from the head unit to the sub for the audio signal, and possibly a turn on wire (the blue one on the back of the head unit), unless the sub has an automatic power feature.
The sub also needs power and ground wires attached, but those do not connect to the head unit. Power should be run directly from the battery with an inline fuse, and ground should go to the nearest good ground point (Trunk latch, seat bolt, etc).
Since you've been trying things for so long, you may not mind another, unless you've tried it already.You'll need someone to help you.
Try using a volt meter on the main power to the changer. (If the changer is din mowered only, this can't be done) and when toy power up the head unit by ignition or other method, read the voltage on the main power wire (yellow?). Tell me what it shows. Also, the "turn on" wire for the unit is usully in with the data cable to the unit, and won't be able to check that.
Also try to read BOTH the acc AND the power wire on the head unit while turning on.
When you read the voltges, make sure that you use the ground ON THE CHASSIS of the componant that you are checking. "Maybe" you have a voltage variance like you said d to a weak ground at one of the units? I'm just troubleshooting as I would if you had brought it to me. Let me know again. Thanks.
** Note- Have you actually reset bothe the head unit and changer?
Take your ground connection directly to metal, this is to insure you have a good ground. Stereo going in and out could be because of a shorted or miswired speaker. Disconnect all speakers and test the stereo. If the stereo continues to blink, you have a stereo problem.
how are your speakers-if the speakers are not in good condition or they cannot handle the power that your head unit puts out the radio will shut down to protect itself- also check your ground line to the radio if the ground is not clean the unit can show the same symptom
Hi. You need to check a few things.
make sure you have power on both the red and yellow wire with the key on. If only one has power the radio will not work.
also make sure that you have a good ground connection on the black wire..
if nothing works yes you probhably have a bad radio. the dual brand radios are notorious for poor solder connections on the mainboard due to the way they build thier cheap circuit boards..