Thanks for the offer Chris but I have already done mine Ianr wants them, what do you mean by grommets?
I have built mine into the wing and fibre glassed them in being Led's they are sealed so in theory they last forever
I didn't like them on the surface so cutting them in from behind allowed me to bring as much as I wanted through and although it was hard cutting the exact size hole in a finished surface they turned out okay.
Regards Mick.