Multi-function display (specifically the 307, but probably applies to other models)

Is there any way to reverse the polarity of the liquid crystal
MFDisplay (for the radio, trip computer, etc) on a 307?

I find polarised sunglasses are best for driving, but when I wear
them, I can't read the display. As all sunglasses are polarised in
the same direction (vertically or horizontally, can't remember which),
the only option is to change the display. Is this possible or
feasible?

 

yes your dealer can change around the settingen

 

The polarisers in the LCD are part of the operation, so it would mean
stripping down the LCD, taking out the polarisers, roating 90 degrees
and reassembling. In practice this would mean new polarisers as I doubt
it's square.

It's the same with my (goodmans) radio.

Now if you could get hold of a sheet of (cheap) 1/2 wave plate and stick
it on the front this would rotate the polarisation (when itself rotated
correctly). 1/4 wave plate would convert to circular polaristion (again
if oriented correctly). I read (somewhere on the internet) that
clingfilm may act as a 1/4 wave plate, but I don't know if this is true.

 

and the peugeot dealer can do it with just pushing a key at the diag2000

 

That's what I thought.

Just tried it, and it's not.

Ah well, I'll just have to keep turning my head to see my MPG.