How do you change side light bulb on peugeot partner van?

To change the side light bulb on a Peugeot Partner van, first, ensure the vehicle is turned off and the keys are removed. Open the bonnet and locate the back of the headlight assembly. Disconnect the electrical connector from the bulb holder, then twist the holder counter-clockwise to remove it. Replace the old bulb with a new one, making sure not to touch the glass part, and reassemble everything by reversing the steps.