new stereo not remembering stations after straight swap

[watchmytracer]

hi i have just replaced standard stereo with a new sony unit and bought the correct leads for conversion was an easy swap trouble is the stereo works fine but i have to retune it every time i turn it on.is this normal

[p fandango]

although the ISO connections are meant to be a standardised wiring some manufactures do have the positive & ignition feeds the other way round

[Chopster]

Sony stereos have yellow and red wires that are interchangeable (on the piece of loom that came with the stereo) swap them over and it'll sort out your problem