i alway find that you need to take the covers off and and with a bit of sandpaper clean the contacts and bulbs up as these do film over due to weather and condensation, if you still dont work go to the front of the vehicle and take apart the black 12n plug and check the contacts and may need to cut the cable back and replace the black plug, all available from www.campingrus.co.uk and if you need any further help.
Darren, May 2010
