I have done that with all my cars, apart from my last car as it had heated jets anyway.
I just go to my local fish shop (not Fish and Chips) and buy a good length of clear rubber piping and some inline connectors.
Cut the washer pipe in the engine bay.
Fit an inline connector and the long length of piping.
Wrap this new bit of pipe round and round a nice large radiator pipe (Not too close or touching the actual engine).
Connect the other end back to the existing car piping and job done.
Do it well enough and neatly enough, it will look OE too.
You then get nice hot water to help clean your windscreen all year round for the cost of about £7.50 !
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