355 (5.2) interior light timer

The interior (dome) light on my 355 does not come on when the doors are opened, nor does it come on when I press the button on the centre console.

However, it works fine when manually switched on using the switch next to the light.

The red warning lights in the door shuts light up when the door is opened, so the door switches are working.

I suspected a faulty light timer, however this part is only listed for the 2.7 cars. Does anyone know what takes its place in the 5.2 - or perhaps I'm barking up the wrong tree altogether?

 

Should have mentioned - it's a Berlinetta, so the light itself isn't a rocker switch. I would have thought that the functioning red lights in the doors indicate that the door micro switches are fine?

 

Thanks. I found that one of the wires had been disconnected and have now reconnected it. However, the light now stays on all the time! I've tried the various combinations of switch back/forward, centre console switch on/off and door open/closed, waiting for a good 30 seconds in case the delay is overly long. Nothing would turn the light off apart from the switch in the housing. I guess either the wires are now connected incorrectly, or I have a bad ground.

I've attached a photo - if someone could quickly post a photo of a working setup, or knows which connections to swap off the top of their head, it would save me an hour or so digging around in wiring diagrams!
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Turned out to be a short at the door.