Help!! What is this box?

I don't look for free manuals or manuals on CD or downloadable. I prefer printed manuals and first editions at that. Much less room for errors being transposed from one format to another, plus you have a BOOK you can put your hands on instead of relying on a computer that may have problems of its own. I just hawk ebay and find a good used manual I can afford. Just my opinion.

Here's a very affordable two volume set in great condition from a seller with perfect feedback.
Service Manuals
Yep. And IIRC we've pointed out some of the factory electrical info is available on line.

Lemme do a quick search, Yep. My brains havent all leaked out yet.
https://www.forabodiesonly.com/mopar/threads/any-idea-what-this-is.550292/post-1974472793
https://www.forabodiesonly.com/mopa...-where-these-plug-into.547748/post-1974429180