I Have a 1999 (last centuries model!) pug 406hdi glx est.i purchased cruise control parts secondhand .heres the story:
1. fitted on/off switch ( simply removed a blanking plug to the right of the steering columb, next to the headlight up/down knob thingy, it plugged straight into a connector block behind blanking plug)
2. started engine,pressed new on/off switch, it lights up, press it again ,light goes out.
3.removed steering columb shroud. lower shroud has 3 fixing mounts for cruise lever/stalk-perfect, and a cut out mark to form hole for stalk. hole cut out,rubber gromet which came with lever fitted , stalk fitted perfectly...just like a bought one!
4. wires and connecter block from stalk...after looking for a while i found the connector plug (in existing loom) further down the steering columb. plugged wire in ..perfect..
5. cruise doesnt work ... so i take it to local pug garage.they connect it to their computer to try and enable in in the bsi/ecu but the option doesnt appear

After some research on the net i found a citreon hdi forum post , saying the option for cruise was being removed automaticaly from the bsi everytime it was hooked up to the citreon main dealer computer to stop owners fitting cruise retrospectively (because they charge a fortune for it as a new option ) and im wondering if thats the case with mine OR AM I OVERLOOKING SOMETHING ELSE?.
it seems odd that all the wiring is in situ and apparently active.. but it wont work!
PLEASE HELP ME, i wanna get this working , am i missing something ie control module?
the wiring system IS NOT MULTIPLEX . NOR WAS THE SECOND HAND STALK N SWITCH I BOUGHT IT CAME FROM A 2000 MODEL HDI 406.