What is this thing I found in my honda st1300?

Found it Velcroed in to the rear right saddlebag not wired to anything. The larger box has "r/a" and "f/a" ports as well as "port 1" "spdomtr" and "remote". The port 1 was wired to another box with 3 DC electrical ports and on the other side, a rusty silver box and red and black (power?) wires coming out.

The smaller box says "Able 2 products company" and there is no text on the larger box or it is covered up by Velcro which I'd rather not remove if I don't have to. Any ideas?

Thanks in advance, best answer will be awarded!
Added (1). http://www.able2products.com/update/14_0553_v1.htm

The smaller box is just a power accessory box, I found it here. Still have no idea what the bigger box would be used for

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