I have a '93 SC400 and while troubleshooting a "no volume" problem from the sound system, I was directed to look at two connectors under the rear seat. It was soaking wet under there and the underside foam of the seat was soaking wet. It shocked me because it was not apparent from just looking at the seats and so I had no idea there was a leak. Question is where is it coming from? The trunk is completely dry. Anyone have a similar experience? Thanks