Tap into 12V for Remote Wire? HELP ME

[DaBurner 10+ year member]

This is the wiring for a 2005 Corolla, my car is an 07 however everything is basically same on corollas, same desigin same interior/mounting kits etc almost everything is identical. I need a tap for a remote wire so i can send the signal to my amp when I start my car, my problem is I do not know what wire to tap off of. One person said Radio 12v another said sumthing else

Radio 12v blue/white + radio harness

Radio Ground brown - radio harness

Radio Ignition gray + radio harness

Radio Illumination green + radio harness

Factory Amp Turn-on N/A

Power Antenna black + radio harness

LF Speaker +/- pink - purple +,- radio harness or amp under pass seat

RF Speaker +/- lt. green - blue +,- radio harness or amp under pass seat

LR Speaker +/- black - yellow +,- radio harness or amp under pass seat

RR Speaker +/- red - white +,- radio harness or amp under pass seat

Click to read more...

 

[Johnny Drama 5,000+ posts]

This is the wiring for a 2005 Corolla, my car is an 07 however everything is basically same on corollas, same desigin same interior/mounting kits etc almost everything is identical. I need a tap for a remote wire so i can send the signal to my amp when I start my car, my problem is I do not know what wire to tap off of. One person said Radio 12v another said sumthing else


Radio 12v blue/white + radio harness

Radio Ground brown - radio harness

Radio Ignition gray + radio harness

Radio Illumination green + radio harness

Factory Amp Turn-on N/A

Power Antenna black + radio harness

LF Speaker +/- pink - purple +,- radio harness or amp under pass seat

RF Speaker +/- lt. green - blue +,- radio harness or amp under pass seat

LR Speaker +/- black - yellow +,- radio harness or amp under pass seat

RR Speaker +/- red - white +,- radio harness or amp under pass seat

Should be that one...kinda weird that its Grey...

 

[prochobo 10+ year member]

Whoops misread

 

[DaBurner 10+ year member]

**** guys, cant anyone agree on anything? I just got this car and I really wanna have a perfect installation, without having worry im draining my battery or anything like that, again Which Wire should I Tap Into?

 

[reneeb7363 10+ year member]

This is the wiring for a 2005 Corolla, my car is an 07 however everything is basically same on corollas, same desigin same interior/mounting kits etc almost everything is identical. I need a tap for a remote wire so i can send the signal to my amp when I start my car, my problem is I do not know what wire to tap off of. One person said Radio 12v another said sumthing else


Radio 12v blue/white + radio harness

Radio Ground brown - radio harness

Radio Ignition gray + radio harness

Radio Illumination green + radio harness

Factory Amp Turn-on N/A

Power Antenna black + radio harness

LF Speaker +/- pink - purple +,- radio harness or amp under pass seat

RF Speaker +/- lt. green - blue +,- radio harness or amp under pass seat

LR Speaker +/- black - yellow +,- radio harness or amp under pass seat

RR Speaker +/- red - white +,- radio harness or amp under pass seat

without having worry im draining my battery or anything like that, again Which Wire should I Tap Into?[/

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it would be this one to make sure the remote wire sends signal only when the radio is on-- regardless of key position

 

[reneeb7363 10+ year member]

sorry for the confusion.... most people run the remote lead off of the antenae/rem wire-- highlighted in red..so the amps are only told to turn on when the radio ios on... you certainly can do what jntar said... because that lead is only powered when the car is turned on. but that also means you will have constant drain anytime the key is turned on or to an accessory position, wehter or not you are using the stereo... either way works. Decide how you want to use your system and that is the best way to do it.

 

[DaBurner 10+ year member]

3 guys saying 3 different things, Im leaning towards the Gray wire just because he's got the most posts lol

ok thanks for clearing that up for me, idc if it drains once i put the key in because i always put my music on once i get in the car...it is my life and hopefully will be my livelihood soon, thanks for all help I'll continue with the installation

 

[prochobo 10+ year member]

Do the gray wire. I misread when I said blue.

 

[Neostar63 10+ year member]

well there are three different ways to do it. Those are all 12 volt sources they will all just turn your amps on differently. The gray wire is traditionally how it should be done since it is linked to the ignition. This will allow the subs to be played with the key in the accessory position as well as with the car turned on. I have seen the attenae not work properly on some cars for turning amps on. The radio 12v would leave your amps on constantly. That is there to keep your settings in the headunit, so that line is always on.

 

[Johnny Drama 5,000+ posts]

3 guys saying 3 different things, Im leaning towards the Gray wire just because he's got the most posts lol
ok thanks for clearing that up for me, idc if it drains once i put the key in because i always put my music on once i get in the car...it is my life and hopefully will be my livelihood soon, thanks for all help I'll continue with the installation

Gray wire and here is why...

Radio 12v blue/white + radio harness if connected amp will never turn off

Radio Ground brown - radio harness amp will now power on using this one and will possibly fry due to ground and power being connected

Radio Ignition gray + radio harness amp will power on when radio is on only

Radio Illumination green + radio harness this would not be a good thing if you connected this one...sparky or no more display plus possibly blown fuses

Factory Amp Turn-on N/A there isnt one of these...

Power Antenna black + radio harness amp will only work with radio, wont work with CD or tape if equiped.

LF Speaker +/- pink - purple +,- radio harness or amp under pass seat amp wont power up

RF Speaker +/- lt. green - blue +,- radio harness or amp under pass seat amp wont power up

LR Speaker +/- black - yellow +,- radio harness or amp under pass seat amp wont power up

RR Speaker +/- red - white +,- radio harness or amp under pass seat amp wont power up

 

[skmfkr 5,000+ posts]

should be gray, hell just touch the wire and see if that works when u turn the car on, if it does then make the connection

 

[helotaxi 5,000+ posts]

If you wire to the grey wire, the amp will come on with the car ignition. If you wire to the antenna lead, the amp MAY turn off when you use any source other than the FM tuner.

As far as the wire color, the aftermarket uses one color convention that is the same for all brands. Each car maker uses its own color scheme and they don't conform to any standard, but they are generally consistant within the brand.