VU-Meter (Pioneer Power Level Indicator)

Hi,

This shouldn't be too hard to figure out:

2 = +12V from ignition-switch (..or directly from battery.)

3 = Ground / Chassis

1 = Input but BEWARE / ACHTUNG Read below:

Because the input lead/cord is unshielded the input must come from the speaker-output of the amplifier. There are only 2 leads (Left & Right) so the signal must be referenced to ground. This is ONLY the case in very old car-radios (..at least more that 15 years old) Now the speaker output is floating with respect to ground because all radios use push-pull output amplifiers to achieve large output. You can't ground one side of the output, you will destroy the amplifier. Still it may function (..not likely) but it depends on the type of input circuit of the display.

Probably this display was made for some exact model of Pioneer car-radio because of the special input plug. I can't remember ever seing it on a Pioneer.

Kind regards,

/tri-comp