Can you give us any more info, such as where it is? But be carefull of the old issue that they put in lots of cables and plugs that are not used on all specs or models. You'll find a few more unused in the engine bay if you hunt them down. It's a mass production thing, it's easier to fit the whole lot rather than have many different looms.
1999 HDI 110 GLX Estate Sold On at 230,000 miles to the lucky John
2003 HDI 110 Rapier Estate
1998 D8 1.9XUD Estate LX 7 seater Estate sold, with regret
1999 306 1.8 petrol.
I found it while rumberging through the head unit caverty. It was located to the rear upper right, by the looks of things coming down from the instrment panel.