while i have a headunit already in my car when i put it in the wires were already cut so i just light tested and solidered away but im planning on a new headunit but i dont want to have re solder it in i would rather use a wiring harness plug thingie bob ...

my question is what would u do

goto the wreckers and cut out the factory plug and solder that into the harness

or (if poss) trace back the stezza wiring until u find a plug unplug it and plug in a new part of harness