so finally i received my stereo and installed it in approx 1 hour.. i could not find the wiring diagram for the amigo.. but didsome research and found out that the wiring diagram of the1999 isuzu rodeo is the same as the amigo.. here is color coding: 1999IsuzuRodeoStereo Information



<TABLE cellSpacing=1 cellPadding=3 width="100%" align=center bgColor=#ffffff>
<T>
<TR>
<TD class=redb colSpan=2>1999 Isuzu Rodeo Stereo Wiring</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce width="50%">Constant 12V+</TD>
<TD class=spcel width="50%">Red/White</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Switched 12V+</TD>
<TD class=spcel>Red/Yellow</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Ground</TD>
<TD class=spcel>Black</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Illumination</TD>
<TD class=spcel>Green/Red</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Dimmer</TD>
<TD class=spcel>Red/Yellow</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Antenna</TD>
<TD class=spcel>Right Front</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Front Speakers</TD>
<TD class=spcel>5 1/4"Doors</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Left Front (+)</TD>
<TD class=spcel>Blue</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Left Front (-)</TD>
<TD class=spcel>Yellow</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Right Front (+)</TD>
<TD class=spcel>Green</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Right Front (-)</TD>
<TD class=spcel>Gray</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Rear Speakers</TD>
<TD class=spcel>4"Roof Mount</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Left Rear (+)</TD>
<TD class=spcel>Orange</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Left Rear (-)</TD>
<TD class=spcel>White</TD></TR>
<TR vAlign=top bgColor=#dddddd>
<TD class=spce>Right Rear (+)</TD>
<TD class=spcel>Orange/Blue</TD></TR>
<TR vAlign=top bgColor=#eeeeee>
<TD class=spce>Right Rear (-)</TD>
<TD class=spcel>Orange/White</TD></TR></T></TABLE>