Tip & How-To about Car Audio & Video

Car stereo wiring

An easy way to distinguish what speaker wires go to what speaker if all you have is a bunch of speaker wires; is to use a 9v battery and QUICKLEY toutch the wires on the two terminals.
this will produce a small POP sound.
You can then wire up the speakers according to the wires on the head unt.

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audio problems. The rear speakers sometimes work, sometimes don't and the driver side door never works. I don't know if it is the wiring or speakers.


A good way to test speakers / wiring is to use a 9v battery. Unplug leads from the deck and jumper the 9v + and - to the speaker wires and see/ listen for the speaker cone to move. With this simple trick you can trace problems pretty quickly

Aug 14, 2016 | Cars & Trucks

1 Answer

No sound coming out of speakers


Old unit? possible innacurate grounding. miswired speakers. stay color code correct if possible. take 9v battery,touch wires until you get desired scraping sound without radio on or c/d running, (how to distinguish lfront, rfront ,lrear ,rrear locations. If you dont have matching color coding from deck harness to existing wires, you have to do 9v trick to find and isolate sp wires. Yellow or red can be power, not necessarily red. black obviously ground, blue is remote power for power antenna or for powering up a power amp..will pick my sons brain if you need more or detailed info.

Oct 26, 2012 | Cars & Trucks

1 Answer

wiring colours


Not sure of your setup re hedunit.
the plug from the old sterio should have the following:
Black- Earth
Red - ignition (only supplies 12v when key is in the ACC position.
Yellow green (12v all the time) even if key is in the off position)
you can check the speakers by using a 9v battery and QUICKLEY toutching the wires on the terminals to distinguish what two wires run to what speaker.
Then use the same sequance for wiring the headunit making sure thar all the solid colour wires are used as the positave connection for the individual speaker wires.

Dec 05, 2009 | Car Audio & Video

1 Answer

wiring color coding For RS tweeter


Different manufacturers use different wiring. Usually the striped is positive.
An easy test is to take a battery (from a cordless drill) or a 9V, and touch the neg + pos to the correct terminal of the battery.
If the speaker pops OUT, it is wired correctly, if the speaker pops IN, reverse the wires.

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Jan 27, 2009 | Kicker RS5 Car Component System

1 Answer

testing with 9v battery


use the speaker wire postive wire and negative wire, touch the 9V battery + and - , you can hear the noise, then you will find out which speaker is. try it. I had a car stero company.

Jun 24, 2008 | Car Audio & Video

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