1. unplug negative lead for the battery terminal
2. undo the 2 T20 bolts holding the door panel in place
3. prise door panel off ( dont be afriad to use some force
4. pull window winder off (if it doesnt pop off like mine did)
5. pull out rivits
6. cut cable with retaining clip
7. wire up with new new wires
8. bolt speaker onto door
DONE!!!
i bouth 10cm speakers with out realiseing so i bodged it buy 13 cm speakers to amke an easier job of it
fitting door is the opposite from 4321
i accept no responisbility for your actions to your car. this worked for me and i hope it works for you