LDV Maxus Fog lights not working?

I have an LDV Maxus 2008 Minibus. The fog lights are not working. I read online that a common problem is the relays in the ETACS so Ive put in two new ones and that doesn't change anything. The bulb is just fine and there is no power reaching the bulb. Also, the fog light switch doesn't stay 'clicked down' once you've pressed it, is it meant to? The only thing I havent tried yet is replaying the switch. After that Im out of ideas! Any help would be awesome thanks.