which wires are speaker ground

[Ktm898]

i bought a truck wired for a 4-channel but the speaker wires are not color coded. Is there anyway i can find which is ground and which is positive of each speaker. The wires for each speaker are connected to each other but i can't figure which is which.

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[CSCStang]

Take a 9 volt battery and touch the speaker wire to the leads. If the speaker pops out, the + will be the wire on the + of the batt. If it pulls in, the + will be the opposite.

 

[Ktm898]

thanks, this will not hurt them right?

 

[CSCStang]

thanks, this will not hurt them right?

Not at all.