Blue HVAC
 

What would I need to make my HVAC controls blue.?
Bulb size and color for them in a 2004 GT.?

See this thread, and read it too the end, you'll have to do something with the existing tint on the gauges.

https://themustangsource.com/f693/ho...gauges-477004/

The tint is blue, so white or blue lights should work as long as you are using LED's. I used white lights and they turned out very blue.

EDIT:
It appears that I was wrong.
Seeing that you have an 04 you might have to do something about the film! Sorry I piped up with wrong info.