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CFaber
05-08-2007, 07:32 AM
On the sedan, the BOSE subwoofer has wires leading directly from it into a harness/plug. On the speaker side of the plug, there is a green and red wire. The opposite side of the plug, when removed, reveals a black and a white wire.

Can somebody please confirm which is positive and negative?

Thanks,
Chris
Gilley
05-08-2007, 07:47 AM
To check polarity of a speaker connect a 1.5 volt battery (AA, C, D size) to the speaker leads. When the speaker moves outward, whatever wire is connected to the + of the battery is the + lead. Then pin match it to the harness if you want to know what wires are + and - on the other side of the plug.

What are you trying to do?
__jb
05-08-2007, 11:37 AM
To check polarity of a speaker connect a 1.5 volt battery (AA, C, D size) to the speaker leads. When the speaker moves outward, whatever wire is connected to the + of the battery is the + lead. Then pin match it to the harness if you want to know what wires are + and - on the other side of the plug.Wow...

Great tip, Sean!!!
JNL
05-08-2007, 11:48 AM
I never thought of that before.........cool trick
Gilley
05-08-2007, 01:43 PM
That's an old trick. Glad I could help.

Obviously, if the speaker cone sucks in toward the basket, the wire that is attached to the + terminal of the battery is the - wire.
falconey
05-08-2007, 01:51 PM
Or you could buy a voltimeter for like 20 bux and use it for a wide range of things. That's one of the best investments I've ever put my money into.
__jb
05-08-2007, 01:51 PM
Once you explain it, it makes sense... But I would have never thought of it in... well, ever...
Gilley
05-08-2007, 05:29 PM
Or you could buy a voltimeter for like 20 bux and use it for a wide range of things. That's one of the best investments I've ever put my money into.

Hmm, will a voltmeter determine polarity? How do you do that? It would be easier than messing with batteries.
decker
05-13-2007, 09:31 AM
Hmm, will a voltmeter determine polarity? How do you do that? It would be easier than messing with batteries.

Way easier, you'll see a positive voltage if you have have red(+) probe connected to the positive lead. Otherwise you'll see a negative voltage if it's backwards.