Continental GT Reversing lamp bulbs

[Gin Man]

Just had a reversing light bulb blow on my 2005 GT, took the bulb out (after a struggle), it seems like it's a halogen type with it set in a cement holder, does anyone know what wattage it is so that I can try and adapt it?

[d6dph]

I worked in a Bentley dealer parts dept until the tail end of last year when the franchise sold.

A 2005 GT doesn't have replaceable reverse bulbs, its a complete lamp and pdc sensor holder officially.

[escort 1983]

As above it comes as a complete unit

[Gin Man]

I'm looking to upgrade to led, but will need a resistor,I need a wattage rating of the bulbs if anyone knows.