I just made a quick test to refresh the grey cell
The dashboard light cluster has two direction indicator tell tale lights side by side. Below that are 4 lights vertically arranged. The bottom light has the legend 'CHECK ENGINE' and if the inertia switch has activated, when ignition is turned on the light flashes briefly, then goes off for about 5 seconds, then it comes back on.
On the subject of wiring diagrams, I haven't found one that represents a 95 +8. For example, some of the diagrams, such as the 99 diagram posted above, show an led warning light cluster, and include a heated screen, neither of which are relevant to a 95 +8. So I use a mix of what I can find, and visual inspection. Also remember that the engine side uses a LR harness similar (or same) as that from a Discovery 1, so a LR Disco manual can be handy. There is some EFI wiring info on sites such as gomog (see earlier post) but there isn't one source containing all the information needed.
Do you know what problem your friends +8 is experiencing ?