Does anyone have a service manual that could scan some pages of what wires go to the instrument cluster in a 2007-2009 MDX?

Specifically, I'm looking for what wires that lead to the door chime via the plug-in connector in the back of the instrument cluster (the smaller one, not the wide plug).

The wires that go to this smaller plug eventually lead to the chime that is soldered onto the circuit board inside the cluster. I have isolated one of the wires (I think it is a very small white wire if I remember correctly). If I disable that wire the chime does not work. If I plug it in the chime works. However, I don't know if I have the positive or negative lead.

I have an after-market HID fog light system and want to use the factory door chime if I accidentally leave them on when I exit the vehicle. I've isolated one of the wires so I'm 50% there.

Thanks in advance

 

Wouldn't it be easier to wire your fog lights to a power source that is only enabled subsequent to ignition on? I.E. the wire that was used previously for your foglights.