Hubby says, as the battery is on the left hand side, take the wring through a rubber grommet in the bulkhead on the left hand side behind the soundproofing, this will brill the wiring out just above the heater motor (you'll have to put ur hand under the dash to find it).
Then feed it under the passenger carpet towards the door.
Remove the plastic sill trim and you'll find white clips which can be opened to hold your wiring, pull the back seat up and you can remove the screws that hold the plastic interior trim, feed the wire under the plastic trim and then replace the screws and feed the wire into the boot, from there its up to you were you want ur amp.
Hope this helps Feel free to PM if you need anymore help.
Sexy Black 3 door Punto With Wicked Yellow Interior.
I ran all the amp wiring down the left side of my Punto. Under the carpet then behind the trim panels and into the boot. In fact pretty much exactly as Dawn describes it! Didn't bother separating the power and phono cables as I'm lazy and couldn't be arsed running wire down both sides of my car!
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Fart In A Tin
<font color="orange">1994 Punto 55SX, metallic red, small, Italian and beautiful! </font id="orange">
also had this problem, took ages 2 find a route.this is how i did it.
* remove nearside front indicator
*open passenger door and push a long hard cable or thin stick straight through the wing and out the indicator hole,
*attach live wire to this with tape, pull it straight back through the wing.
*run the wire through into the car through the same big grommet which the window and speaker wires are ran. job done mate!!