Hi, I'm replacing the becker in my 300e ('89) with an eclipse CD3403. Through the helpfullness of the Becker instruction manual I've almost completed mods to the eclipse harness to create a plug-in install. The only thing the manual dosen't explain is the polarity of the connectors in the stock speaker wire plug. This plug (and several throughout the car) has a thin wide section and a pin-like section. Somewhere in the forums I remember seeing a test to check speaker polarity but I can't find it. Is the pin +'ve and the flat one -'ve or is it the other way round? Thanks.

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Fronts: Focal HC130 (5 1/4 inch) Co-axials.
Rears: Nil.
Headunit: Eclipse CD3403.
Amplifier: Audison SrX5

Remove the grille cover, if necessary, to see the cone movement. Connect a small (AA, AAA) battery to the pins. If the cone moves out when the last pin is connected, the + lead is the side from the battery +. If it moves in, the reverse is true. (Been a while, hope I explained this right)(I'm sure I'll get corrected if it's not though!)

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1986 560SL
2002 Toyota Camry
1993 Lexus