Side lights remain on
 

My wife as a 2003 carisma1.9 diesel. When she switches the ignition off the side lights remain on. I thought the light stalk may be the problem so I disconnected it and tried another stalk but the side lights still remain on even when the stalk was completely removed. I have tried downloading the wiring diagram from a thread on here but it just sends me to a junk page. What other things can I try or can anyone suggest what the problem may be. Thanks