Side marker lamp

[Over50]

Hi all,

Vixen S3 resto. I seem to get hung up on Lucas lamps, anyway here goes.
Side marker lamp is a Lucas L841 and looks original, no bulb holders of course! The square indicator lens is yellow and the rectangular reflector lens is amber. Question is will I run into trouble at MoT with a yellow lens if I get it working. I suspect amber is correct and hard to find.

All views welcome, thanks in advance, all vixens are different and wonderful.

Dave

[Adrian@]

Dave, my understanding is that if it is on the car it has to work....and if it is that exact Lucas bulb holder that is the issue then I carry them in stock.
Adrian