[jfmctlaw]

Is this a new vehicle or previously owned? Did someone have other equipment installed? You're right that 14ga won't handle 40amps. People looking for power just connect wherever they can. Usually the connecting equipment has its own internal fuse, so there's no concern on safety. Also sounds like someone may have wired power through the fuse box from the battery for their own use.

Sorrry can't help on D1 v. D2 until next month when the new Sub arrives. God will I love it with the girl friend though.