Wiring Ditchlights in Atlas Dash 8-40CW


I'm restoring an old Atlas Dash 8-40CW and I need help connecting the lights. As you can see in the picture I have the 5-pin connector with wires in blue, brown, black, orange and red. Can anyone tell me about the 5-pin connector, which is the headlight wire and which are in the chassis contacts?

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