Toyota Trucks: Speaker lead polarity

Usually the blades of the terminal are different. The positive terminal has
a wider blade.

"andrea" <com> wrote in message
news:com... 

Easy way to tell if the speaker is not marked with a polarity value is to
use a small AA battery, anything with 1.5 volts will work.

Tape a wire to each end of the batttery. Take one of the battery wires and
touch it to the speaker terminal. Then take the other wire and touch it to
the other speaker terminal.

If the speaker cone moves out the polarity will be the same as the battery
markings.

Positive battery lead will be postive on the speaker and so forth. If not,
and the speaker moves inwards then the polarity is reversed.

Hope this helps you.

toyrantula wrote: 

A Hi-Fi and Stereo installer's trick from long ago... :>))

Tom - Vista, CA