I'm about to order a Pioneer DEH-P5800MP headunit and it says its recommended to buy this adapter cause of the Mach stereo. Do i have to buy this for the stereo to work properly? If i do its no problem, but i thought it was pretty pricey.
Headunit:http://www.crutchfield.com/S-RGlfsHT9Tj6/cgi-bin/ProdView.asp?g=300&I=130DEHP580
Adapter:http://www.crutchfield.com/S-RGlfsHT9Tj6/cgi-bin/prodview.asp?i=142C4FDK5
Headunit:http://www.crutchfield.com/S-RGlfsHT9Tj6/cgi-bin/ProdView.asp?g=300&I=130DEHP580
Adapter:http://www.crutchfield.com/S-RGlfsHT9Tj6/cgi-bin/prodview.asp?i=142C4FDK5