warning lights problem

After i got my 456 GT delivered, i noticed that not only the warning lights for SLOW DOWN 1-6 and CHECK ENGINE 1-6 did not come, when setting ignition ON, but also the spoiler, the water- and the oil temperature lights remain dark. Assuming that the bulbs needed replacement, i opened up the dash and checked them: the bulbs are OK.
Now, i feel that these are all relevant alarms and i have to get them to work. Is anyone in this Forum experienced with this issue? I'm also missing a wiring diagram, which could certainly help to locate the problem.

Would be grateful for any assistance

Peter