You must have linked an auction item as the link is not working.
In full sun I can easily read my red gauges cant vouch for blue ones though.
If the mob did a zero to 30 boost gauge I get that too. Sadly they dont do
an EGT gauge.
Digital gauge still has plastic on it.
Edit:: Did a bit of google I dont thnk they have a back light, [your's]
Its the way the outside rim lights up is your illumination, well thats
the way I read it