Just followed the instructions. Works a treat.Very impressed mate. On another note, has anyone had problems with outside temp readings on dashboard? Yesterday we were lucky enough to have outside temp around 20 Degrees ish, inside the car the dashboard outside temp read minus 9.5 degrees !!!!!!! Thought i was back in Canada!!!! Also a strange ticking noise inside the car around the passenger footwell area? Seems very strange. Any info greatfully received. Cheers.