remote locking confusion!

[Oll13D]

right, when i bought the car it came with a key fob for the remote locking but this has never worked. i thought the fob case was just fuuuuked as the buttons were mashed, i replaced the case but still didnt work.
the other day two drops of water came out from by the sensor in head lining, and now im guessing water has got in and knackerd the sensor, is it worth buying this from ebay
http://cgi.ebay.co.uk/Citroen-Saxo-central-locking-remote-and-sensor-/270696957937?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f06cbc7f1
and swapping them over or would it be better to buy say an aftermarket locking system?
cheers.

[LukeyC]

id buy that and then swap them mate at the end of the day looks like you'll get that cheap of ebay so if it dont work its not much of a loss.

[Oll13D]

yeah, think im just gonna go for it, anybody got the best way of sealing the sunroof as this is most likely where the water is coming in??

[foweyracer]

i have had same problem when it rained heavily or washed the car water ended up in the interior light in headlining, although i havent got round to getting the remote locking working again i did put a thin rubber washer on the roof where the bolt holds ariel on since then havent had a drop come through :)