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Old 01-22-2007, 08:59 PM   #1
RobK0000
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Default Pwr lead on Radio

Im pretty sure this was covered once but i need to know for tomorrow morning.

For the 12v pwr wire going into the radio, if i plug in my HDD power wire to that and ground it through the radio harness aswell, woudl it be safe to say my radio will shut off at the same time as the HDD? basically does the power shut off to the PWR wire on the wiringing harness disconnect power after the car turns off?
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Old 01-22-2007, 09:03 PM   #2
Daishi00
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There are two power wires on every HU. One is the switchable power wire, which turns on and off with the ignition, the other is a constant +12v that runs to the HU. If you cut that line off when the HU shuts off you'll loose all your settings.
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Old 01-22-2007, 09:05 PM   #3
RobK0000
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well yeah i know that, but its not quite true on my radio, i never hook up the memory pwr wire, takes to much effort to bring it to the battery, but my radio always stores its memory, always has saved presets and clock time. The regular PWR wire is the one that shuts off when the car accesories is off right?
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Old 01-22-2007, 09:10 PM   #4
Daishi00
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ok you're confusing me...and that's pretty impressive ha.
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Old 01-22-2007, 09:14 PM   #5
RobK0000
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im sorry, i cant explain! lets try again...

There are two power wires for every radio, PWR usually red, goes straight into subaru radio harness, now the second PWR wire usually orange this is memory, it goes directly hardwired to the battery.

I only have the red power wire hooked up, this means that the radio only turns on whenthe car turns on, or accesories. this is the one i need to tap into right?
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Old 01-22-2007, 09:16 PM   #6
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LOL, this thread was useless, How do you delete a thread i started? or does a moderator do it?
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Old 01-22-2007, 09:17 PM   #7
Daishi00
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Actually, every radio harness to connect to an aftermarket unit has both power wires in the harness. In fact the stock radio does as well. Most people run the yellow power wire to the battery because the stock wiring usually doesn't have enough juice to handle the aftermarket units.

So you don't HAVE to run the yellow wire to the battery...it's just a good idea.
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Old 01-22-2007, 09:34 PM   #8
RobK0000
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so does the accesories pwr wire have 12v output? or is that like a remote turn on lead that sends out 4-6, i have to hook upthe hdd to a 12v+ that turns on/off with the radio
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Old 01-22-2007, 09:39 PM   #9
Daishi00
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you can splice the HDD into the ignition power wire...so the red one. Not the yellow one. That will shut the HDD off when you turn off the car. You need that wire connected to the deck as well. You really should hit up 02BlueSuperRoo about this. He's wired his HDD in, and will be able to help much more than myself.
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Old 01-22-2007, 09:41 PM   #10
RobK0000
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Yeah i might do that, what im worried about is the harddrive getting corrupt files, because of bumpy driving and it not being use to such a cold enviornment during winter...hmm. ill post results tomorrow when im done, should take about 1/2 hour to hook it all up, to bad its snowing right now, hopefully it stops!

Thanks for help!
gratefully appreciated!
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Old 01-22-2007, 09:56 PM   #11
Daishi00
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you got some sort of regulator though right? With the car on you're going to put out between 14-15 volts. Not good for a 12v HDD.
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Old 01-22-2007, 10:14 PM   #12
RobK0000
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yes, i got a step down regulator 12v to 6v, shoudl work out fine! i pmed02BlueSuperRoo hopefullky he gets back.
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