Yer, those are standard as far as I know, however there's now an option for an Interior LED pack for 60 quid which adds something else, we just don't know what.
OR you could buy replacement LED bulbs off eBay for about £8 all together and change them yourslelf which I am doing to see which I prefer. I will try to post some before and afters when I have done it (Hopefuly in the next week or so).
Just given this a try, sadly the cheap bulbs I have do not want to fit.
It would seem that you need an LED bulb the same shape and size as a normal 501 bulb.
I can get an LED 501 to light up but just doesn't fit snug and secure like a standard 501 bulb.
I will keep looking though (through trial and error) and when I find a successful match I will post links and before and afters.
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