Thanks for your help. I have since found out the part number for the bulb is 357 919 062. VW stopped making them 6 years ago, but I found a company called Brickwerks who can supply the bulb as it also is fitted to T3,T4 & Caddy models. Hope this info helps anyone else with the same issue.
Hi Guys My main beam warning light has stopped working. I have a live feed to the instrument cluster so it looks like the bulb has blown. Does anyone know where you can get replacement bulbs from.