Hi Laurence

When I fitted mine I just upgraded to LED lamps from a car spares so I used the original holders and all. Just be very careful that you don’t damage the copper tracking at the back because if it is loose, it will easily snag when you’re putting the plugs back in and you won’t find out till you’ve got it back together again (I know from experience, I have no water temp at the mo and have got to take it out again)