make sure that speaker wires are not touching at all, this causes stereo to cut off
try taking out your key and opening a door... Check the ignition switch to make sure iot is cutting off power when the key is turned off.
it is still running off the battery, most of the time it will turn off when you open the door
Loose ground
Never had to deal with replacing a stereo in one, so I can't tell you off the top of my head... what you need to do is get a test light and use that to determine which one has power. Once you establish which one has power, you keep the probe to the hot wire, and you can use the clip end of the test light to find ground by hooking it to the other wires until it lights up again.
-- A radio receiver should be hardly noticeable to the electrical system in a home or commercial building. Unless it feeds a theater-size audio system, a radio receiver typically uses less electrical power than an ordinary light bulb. -- If the radio is turned off, then as far as the electrical wiring is concerned, that's exactly the same as pulling the plug out of the wall socket. So, whether it's on or off, plugged in or not, a radio receiver would have to be seriously broken to have any effect on a circuit breaker.
the ACC wire from the stereo is connected to constant power (+12V)
The headlights turn off because you have accidently hooked the stereo's power wire onto the headlight relay wire. When you turn on the stereo, there's not enough power left to run the headlight relay. Thus, no headlights. Re-wire the stereo.
Try powering the stereo up with jumpers to a power source. If the stereo still won't work with direct power check to see if it might have a anti theft stereo. If no then replace the unit. If it works with jumpers then look for a break in the wire or a bad fuse. Easiest fix in this case would be to run a new wire from the fuse panel, (key on power) to the stereo. These cars are known for stereo problems, my daugher has an 1989 929 and the stereo dies for days and then works if someone turns it off by accident instead of just turning off the volume...
Locate the power drain. You either have a switch on the doors or trunk that isn't cutting off...a light stays on. OR you have a badly installed car stereo/amp/or alarm system. Have you checked your alternator output? You can do so for free at Auto Zone. They can check it "on car". If you can, and it's an aftermarket stereo system, (after checking alternator and battery) disconnect stereo from power and wait overnight to see if better. This could also happen if you have a low-wattage alternator and a HUGE sound system that sucks down power. Auntetr
Has it always been like this or not? If it is, then it is not really a problem. It is how the stereo was installed. An stereo can be installed to be turned on whether the engine is on or off. If the stereo cannot be turned off at all, then you have a problem with your stereo.
This is only used if your vehicle has a motorized antenna that pops up only when the radio is on, then retracts when the radio is off. A voltage is sent from the stereo through this wire to a relay which applied power to the antenna. If you don't need it the wire from the stereo should be capped off to prevent a short occurring if it were to ground out under the dash somehow.
You could have shorted the stereo out, if so there is no way to check that. You might have to get a new head unit. Two wires have to have power in order for the stereo to power on: the 12 - volt constant (this gives power to the stereo even when the key is off for clock and setting memories) and the 12 - volt switchable (which tells the stereo the car is on and powers up the stereo). Remove the stereo plug from the back of the stereo - if two of the wires in the plug have power when the key is in the on-position (use a test light grounded to something metal) then the stereo is bad. If only one wire has power, you have a bad fuse or bad wire. If the constant wire is bad, simply jump a new wire to a constant fuse on the block such as the horn fuse (or run it straight to the battery and use an inline fuse). If the switchable wire is bad, tap into a wire at the fuse block that switches off with the ignition.
A guess would be that someone wired the power to the stereo into the circuit for the dome or courtesy lights that run off the passenger door switch. Might want to find a separate circuit in the fuse box and pull the stereo power from it.
Very little, if fact professional audio equipment is left on around the clock. It is thought turning things on and off frequently is what shortens its life.
yes a 12v constant is a wire that has 12 volts even with the ignition off, you should not have to run a new wire the existing stereo should have one for station memory. with the ignition off test all wires on the stereo connector, only one should have power.
It can knock down electrical poles, wires, cutting off power supplies
Don't know if this will help, but on my 99 SC2 I have to turn off the stereo power knob until it clicks, then press it in and use the scan/seek buttons to set the time. Try experimenting with different stereo controls while the power knob is off. you'll find the one(s) that change the time.