Speakers wires : how to identify + and - ? - Toyota Yaris Forums

Razr · 08-15-2007, 06:52 AM

Simple trick actually..

1. Get a 9V "1N" type battery (the small rectangular general usage ones) and a connector to suit it with flying leads (bare wires). This shouldn't cost more than a few cents at an electronics shop.

2. Unscrew the OEM speaker and disconnect the factory wiring harness from it.

3. Momentarily "tap" the 9V battery leads across the speaker terminals. If the speaker cone moves forward when you do this, the + side of the battery is connected to the + speaker terminal. Likewise of the speaker cone moves backwards, the + of the battery is connected to the - speaker terminal.

4. Use your newfound polarity knowledge to work out which wire on the OEM adaptor is which :)

Note: don't use anything more powerful than the battery suggested, and only hold DC current on the speaker as long as you need to (i.e. < 1 second). An old, partially discharged 9V battery is the best bet - a fully charged one will get the cone hopping pretty hard. Lower voltage batteries will also work, but the cone movement may be too small to be useful.

talnlnky · 12-15-2008, 09:35 PM

Quote:

Originally Posted by Razr

Simple trick actually..

1. Get a 9V "1N" type battery (the small rectangular general usage ones) and a connector to suit it with flying leads (bare wires). This shouldn't cost more than a few cents at an electronics shop.

2. Unscrew the OEM speaker and disconnect the factory wiring harness from it.

3. Momentarily "tap" the 9V battery leads across the speaker terminals. If the speaker cone moves forward when you do this, the + side of the battery is connected to the + speaker terminal. Likewise of the speaker cone moves backwards, the + of the battery is connected to the - speaker terminal.

4. Use your newfound polarity knowledge to work out which wire on the OEM adaptor is which :)

Note: don't use anything more powerful than the battery suggested, and only hold DC current on the speaker as long as you need to (i.e. < 1 second). An old, partially discharged 9V battery is the best bet - a fully charged one will get the cone hopping pretty hard. Lower voltage batteries will also work, but the cone movement may be too small to be useful.

YEAH! 9v battery trick for teh WIN!!!!

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08-15-2007, 06:52 AM	#1
Razr YRS WHOR View User's Garage Drives: White 2007 Yaris E-Limited 5dr Join Date: Feb 2007 Location: Chiangmai, Thailand Posts: 359	Simple trick actually.. 1. Get a 9V "1N" type battery (the small rectangular general usage ones) and a connector to suit it with flying leads (bare wires). This shouldn't cost more than a few cents at an electronics shop. 2. Unscrew the OEM speaker and disconnect the factory wiring harness from it. 3. Momentarily "tap" the 9V battery leads across the speaker terminals. If the speaker cone moves forward when you do this, the + side of the battery is connected to the + speaker terminal. Likewise of the speaker cone moves backwards, the + of the battery is connected to the - speaker terminal. 4. Use your newfound polarity knowledge to work out which wire on the OEM adaptor is which :) Note: don't use anything more powerful than the battery suggested, and only hold DC current on the speaker as long as you need to (i.e. < 1 second). An old, partially discharged 9V battery is the best bet - a fully charged one will get the cone hopping pretty hard. Lower voltage batteries will also work, but the cone movement may be too small to be useful.