Two things to get power supply ignition and ground you need a test lamp,
this is easy to purchase in any hardware store.
When you´ve done that and to develop into speakers system just take a 1,5
battery and try wire by wire. One wire in + and try the rest of them on -
you´ll see that whwn you match the couple loud-speaker will sound bump like.
It won´t break i assure you I professionally work in it..
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