Well, in answer to your Q - don't see why not. Though there must be a dozen aftermarket cheap n cheerful kits on certain auction websites these days, which would work perfectly fine, and are designed to retro-fit, rather than taking what is supposed to be an integrated (and theoretically plug n play) setup and splicing it into the loom. How handy you are with a soldering iron/electrics would alter how easy/difficult it is.
Option 2, and not actually answering your question, is to get the little bleeder to
learn! Not to be cruel to the lad, I like him, but he needs to learn. Daft as it might sound, get him playing around on a larger car makes parking easier. I learned on a Polo, later in a Corsa, which I passed in. The day after passing I was
convinced the Corsa was a huge oil-tanker of a beast, that was unbelievably challenging to manoeuvre. My first was was a TD Omega, one week later I was comfortable, learning the dimensions, and when it came to park my mate's Fiesta up as a favour, the thing felt like what it is, a teeny-weeny little supermini - dead easy.
When I come to power all people will learn to drive in medium-large cars. I genuinely think owning a bigger car makes you aware of your presence on the road and improves your driving/parking too.
