Question about wiring with ignition and switch 12+ power

[bbaker1210]

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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[1aespinoza Premium Member]

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?

Do not cross them in the final install. ACC has to be turned off by the key. Otherwise the radio may drain the battery if left parked for extended periods of time.

 

[bbaker1210]

Do not cross them in the final install. ACC has to be turned off by the key. Otherwise the radio may drain the battery if left parked for extended periods of time.

Alright. There are two illumination wires in stock and only one in the new wiring kit. What would I do there?

 

[1aespinoza Premium Member]

Alright. There are two illumination wires in stock and only one in the new wiring kit. What would I do there?

If you have a multimeter, see which one sweeps the voltage when you use the dimmer knob. If they both do it, choose one and see the function characteristics as you use the radio at night.

 

[bbaker1210]

If you have a multimeter, see which one sweeps the voltage when you use the dimmer knob. If they both do it, choose one and see the function characteristics as you use the radio at night.

I don’t have a multimeter. Should I just pick one and see its function? It is a touch screen stereo

 

[1aespinoza Premium Member]

I don’t have a multimeter. Should I just pick one and see its function? It is a touch screen stereo

That will work. If you do not like the function, switch it out.

 

[spokey9 5,000+ posts]

I don’t have a multimeter. Should I just pick one and see its function? It is a touch screen stereo

Believe it or not but even a cheap multimeter comes in handy doing a car stereo

 

[Firewalker]

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

https://www.amazon.com/dp/B07SHLS639/?tag=caraudiocom-20

or their other version

https://www.amazon.com/dp/B0B7WFPB4T/?tag=caraudiocom-20

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.

 

[Firewalker]

Some at DIYMA and other places have tried this Oscilloscope as well and got good results shockingly for such a cheap unit.

https://www.amazon.com/dp/B09XWHRFGV/?tag=caraudiocom-20