Just noticed these - http://www.amazon.co...=I3LQP00E0E7YIE
They are down as interior bulbs, but I've used interior (like) bulbs as my sidelights before and they still worked. They are still W5W but its just the 24V that is worrying me.
If not, is there any other alternatives, that have a HID/purple/blueish colour that are bright. The one I have at the moment are bright and purpleish but they start flickering after a month.