Yes, the orange wire is for a little light that clips on to the side of the lighter socket.
The pink wire goes to the parking brake switch.
The blue is power to the cig lighter.
One of the black wires is ground for the lighter and the other black wire goes to the parking brake switch. But I don't think they are interchangeable, so hopefully they only reach to one location. Otherwise you'll need an ohm meter to check and see which one is ground. If you get them mixed up, I think the seat belt buzzer will sound all the time.
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