what gauge bulb? Starcraft American 18

[popey]

some of the bulbs of my gauges are gone. (12V) Unfortunately they are difficult to access. Does anyone have an idea, what sort/type of bulb is used? What winding do they have? Are they bush and turn?
The speedometer is the big one, the water tempreature gauge is small.

Thanks a lot for your help.

Best Regards

Popey