Thanks for all the responses, I take the point about mount security but I've gone with this Wipac driving lamp bracket kit from Williams Morgan all the same.
bulbs, sat behind the clear lenses these bulbs give a lovely subtle golden glow when the fogs are off.
![[Linked Image]](https://i.ibb.co/Hgsy5LB/Marchal-670-680-with-amber-bulbs.jpg)