how to figure out positive and negative wires
02-13-2001, 10:49 AM
#1
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how to figure out positive and negative wires
hooked my stereo(deck) in car...adn the wires change color when they get next to the speaker....
now is ther anyway to figure out which is poositive wich is negative?
like say using a volt meter?
now is ther anyway to figure out which is poositive wich is negative?
like say using a volt meter?
02-13-2001, 12:53 PM
#3
If the wires were all stock, they would be the same color at both ends. Because somebody fooled with them, here are a couple solutions.
Touch one probe to the wire in the dash and the other probe to the other end of the wire at the speaker. You'll probably need to extend one or the other to reach. If you know + and - at one end, you'll be able to find it at the other end.
Another way is to do this: Hook the speaker up (1 way or the other) and touch the speaker wires at the dash to a 9 volt battery. Watch the speaker and see if it moves out or if it pulls in. If it pushes out, then you've got the + side of the speaker connected to the + side of the battery. If it pulls in, it's reversed. You can then hook it up to the radio accordingly.
Which ever method you choose, label it at both ends so you don't have to go through this next time.
------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah
Touch one probe to the wire in the dash and the other probe to the other end of the wire at the speaker. You'll probably need to extend one or the other to reach. If you know + and - at one end, you'll be able to find it at the other end.
Another way is to do this: Hook the speaker up (1 way or the other) and touch the speaker wires at the dash to a 9 volt battery. Watch the speaker and see if it moves out or if it pulls in. If it pushes out, then you've got the + side of the speaker connected to the + side of the battery. If it pulls in, it's reversed. You can then hook it up to the radio accordingly.
Which ever method you choose, label it at both ends so you don't have to go through this next time.
------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah
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