Let me apologize for bumping such an old post, but so far this has been the only reference to this mysterious black box that I've found
I was playing around underneath my steering column on my 86 nissan hardbody (sorry guys) and found the box with many wires not hooked up to anything in particular.
After a bit of searching and some talking with people on a hardbody forum I'm left to believe this has to be some kind of aftermarket cruise control?
Wondering if the OP was able to dig up any information on it or was able to wire it up correctly.
Thanks, and again my apologies for the bump.