so im trying to set up a stereo in my car and have noticed my cables have been cut, and im trying to wire them up to a new harness but the colours of the wire in my punto are different, does anybody know which ones do what in mk2 punto 2000

Nice little diagram right here on the forum!

Follow the link.

https://www.fiatforum.com/punto/272112-punto-subwoofer-help.html