What is this plug?

[hoveringuy]

I've seen this plug for 10 years and still have no idea what it's for. My guess is ABS diagnostics?

Anyone know fer sure?

[MR 325]

Auxiliary fuse box.

[hoveringuy]

Now that I know what it is I searched. I guess it's a placeholder for future expansion.

Where is the output for the fuses it holds?

[MR 325]

Sorry, that's as much as I know. :)

[JTapper]

It holds two fuses, if you remove the cover there should be two terminals. One is always hot, the other is hot with the ignition on.