ISO is 2 blocks of 8 pins. sounds like you're trying to make a kenwood plug fit a pioneer socket, which won't go. can't remember if it's pioneer or alpine but the plug is identical but the pins are connected differently. if you power it up with the wrong lead, it lets the mystical blue smoke out. luckily i found this out on one of work's headunits.
presumably your pioneer came with a subloom? to ISO plugs?
you need a converter from mazda to ISO, then ISO to your headunit with the supplied subloom. look on ebay for ISO converters. shouldn't be much over a fiver
tom
presumably your pioneer came with a subloom? to ISO plugs?
you need a converter from mazda to ISO, then ISO to your headunit with the supplied subloom. look on ebay for ISO converters. shouldn't be much over a fiver
tom