Should my JVC KD X270BT always come on when car power comes on.... even if was off before/...

[shawninvancouver]

I just put in a JVC KD X270BT
when i turn unit off , then turn car off, when i turn car back on it starts up.. is it supposed to do that??
i assumed if i had radio off, then turn car off, when i turn car on , the radio would still be off, and i would manually have to turn it on...
i have the battery wire to battery and had ignition wire to ignition, but the radio would not even come of when it was wired like that ( the correct way ) so i put battery wire to ignition and ignition to battery and it comes on, but does what i say... yellow is supposed to be battary, buy goes to ignition and red goes to battery...
any ideas?????
are there other wires im missing.. i have ground... and i have an antenna hooked up that works...

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[shawninvancouver]

any ideas? should it stay off?? or should they always come on??

 

[hispls 5,000+ posts]

i have the battery wire to battery and had ignition wire to ignition, but the radio would not even come of when it was wired like that ( the correct way ) so i put battery wire to ignition and ignition to battery and it comes on, but does what i say... yellow is supposed to be battary, buy goes to ignition and red goes to battery...

Sounds like you did something wrong. You should use a DMM to determine which wire from your car provides 12V constant and which provides 12V only when the key is in the ACC position. Yellow to the head unit should be +12 constant and red should be switched with the ACC.