Disconnect the battery wait 5 mins so airbag system closes down slide seat fully back remove the 2 torx 40 bolts fastening it to the floor slide seat fully forward remove the back bolts tip seat up unclip the wiring connectors in some cases the connector has been removed and replaced with heat shrink connections which WILL have to be cut and replaced with new (heat shrink connections) as these are for the airbag system you must note which Wire goes to which ie put tape on one of the wires on both sides of the connector before cutting
Peugeot master technician, September 2008