I thought this puzzle game was well thought out and a really good idea for a game jam game. With some additional interactions, I think you could make a fun and engaging puzzle game. Great work!
If I were to add to this
I think some variation in the color around the key elements would be nice. I'd also add some items around the levels that would animate (think lights, elevators, fans, etc.) to give some impact on hooking things up would kick this up a notch.
Game Design
I'm going to be using Jonas Tyroller's framework for fun for these reviews, so you can watch his video for more context around it. My day job is looking for ways to improve things, so just because I offer a lot of opinions on that, don't think that I didn't like the game. :D
Impact
I think the connections really need more impact, as the player is working toward hooking these up. Some sounds, lights, and other things coming to life would really add to the impact the player feels when hooking these up.
Challenge
The challenge in this lies in planning ahead. I think that if you can do that, this game is not very challenging, while if you can't, it could become frustrating. I think that some variety in the challenge would be good.
You played with some moving elements with the crushers, which was pretty nice. I think some other interactions that involved that kind of timing or reaction would be even better.
Fantasy
Beyond robots hooking wires up, I wasn't sure what the fantasy was for this one. My brain was struggling to come up with a story that it was satisfied with.