'96 Continental DSM High Current Fuse blowing

[danf]

I loaned out my 96 Continental long-term. While the borrower was adjusting the driver's seat, the high current DSM fuse blew and now it blows any time we replace it. We tried disconnecting the battery while replacing it, and get the same result when we hook the battery back up.

Should I go pulling the seat out and looking for a grounded power cable or is there something more esoteric I should be looking into?

Any help greatly appreciated!