Double Din Fitting???

[Rusty2009]

Ok found it.

It would seem they have added switches (although it doesn't show where they are).

Here's is what the guide says.

SETTING THE DIPSWITCHES

Before installation, make sure that the dipswitches on the interface are set according to
the below information:
Set Dipswitch 1 to ‘On’ if installing a Pioneer aftermarket stereo, and ‘Off’ if installing a
Sony aftermarket stereo. If installing any other brand of stereo, Dipswitch 1 can be set to
any position

Set Dipswitch 2 to ‘On’ if installing the product into a vehicle with 2 Line Display, and ‘Off’
if installing into a vehicle with 4 Line Display
Dipswitches 3 & 4 have no functionality with this product and can be left in their default
positions

I've made in the bold the area you want to look, change the switch and the display should work.