Warren
Did you find something?
I'm integrating a Narva LED into my rear end.
Have a look at
www.narva.com.au, go to LED truck and trailer link then part # 90810 on pge 302 of the calalogue (sorry site wont let me link it)
The pick shows a black surround but this is only the rubber surround/seal which you could delete if fixing the thing from the inside as it's made to face fix.
Greg