one of the map light bulbs in my car have gone. i was thinking bout getting LED replacement ones instead but i dont know what these type of bulbs are called.
im guessing some one would know?

they look a bit like fuses you would find in an plug if that helps

 

Festoon bulbs

 

Make sure you get the correct length Festoon. That said, the big ones still fit between the terminals okay.

 

what sizes could i go for then. do you know off hand what the standard size is or what will fit thanks?

 

I can't remember to be honest. I bought a couple of LED cool blue ones for my old 93 WRX and got the wrong sized (too big ) ones. But they still fitted/worked.

Why not remove one of your existing filament ones and measure end to end?

Don't forget the central courtesy light too - for a full matching set