Volvo rear wiring

[Snowdude]

I was changing a rear tail lamp the other day, and found this plug under the left rear truck space... I got all excited because I thought it might be Sub pre-wiring, but I'm not sure what it is.

[StoningtonXC70]

I'm thinking maybe CD player carousel but doens't look like enough conductors on the plug....

[BEJinFBK]

Does not appear to be either. The changer connections are a little
round mini DIN and a 2 pin power connector. And it's not for a sub.
( The '98-'00 Gen 1's didn't have a sub option. Sorry. )

Looks more like the socket pattern for a relay.
Not sure what for. I don't see it in my '98 or the diagrams.
Looks stock, though. Hmmmm.....

What year is your XC, Snowdude?

[cattlecar]

It is not audio and the power antenna lead that can be found on X70's back there is a green/red and black wire in another type connector and that is what CD changer used for power supply.. I have found that connector under the floor rail before but I have never found it used. It may be trailer wiring related but I don't recall using it on a car I added OEM trailer wiring kit to. I wonder if it is for rear heated seats that was offered on these models in some markets.
on edit: It may also be a diesel related wiring harness. Diesels have a heater in tank to prevent fuel waxing and those weren't sold in North America.

[BEJinFBK]

It is not audio and the power antenna lead that can be found on X70's back there is a green/red and black wire in another type connector and that is what CD changer used for power supply.. I have found that connector under the floor rail before but I have never found it used. It may be trailer wiring related but I don't recall using it on a car I added OEM trailer wiring kit to. I wonder if it is for rear heated seats that was offered on these models in some markets.
on edit: It may also be a diesel related wiring harness. Diesels have a heater in tank to prevent fuel waxing and those weren't sold in North America.

Seems a ways back for the heated seats...
That was one diagram that I didn't even look at.
But that yellow lead looks pretty hefty.
Appears to be a relay harness for something.

Give me a model year and I'll look a bit more!