Question about wiring with ignition and switch 12+ power

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bbaker1210

CarAudio.com Newbie
Mar 22, 2023
7
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Arizona
So I’m replacing my cars radio, and in the user manual for the wiring of the new radio, it says to test the radio (before installation) it says the ACC wire and the 12+ V wire should touch the positive pole of the battery and the ground wire should touch the negative pole in order to turn on.
Should I cross the ACC wire and the wire that will be supplying power when I install the radio, or would that drain the battery?
 

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30 bucks on Amazon and you can get this one got one similar and works just fine.


or their other version


the 1st one also has a 25% coupon at checkout and the 2nd one has 5% for basic stuff works fine. I have a 500 dollar fluke that dad got at Mobil Oil for free that I also use and for setting amplifiers I just use the cheap 30 dollar one as it works and it has the same numbers that the Fluke does when I set gains so the Fluke is just used for other stuff at my dads house.
 
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