Generally, if a specific display didn't come with a specific controller, they wont' work together. So if each was given to you separately, you probably can't use them together.
To figure out the wiring, I recommend looking up other threads where people are trying to get various items to work together; other people's posts in those threads helping them to do so will help you figure out at least where to start. Tommycat's posts often have specific advice, so threads where he's helping someone figure out the wiring may be more helpful.
There are no followed standards for wiring order, color, connectors, etc. So don't assume anything about wire colors--you have to check *everything* for what it *actually* connects to inside devices.
If you don't, you may connect high voltage to low voltage devices, and destroy the stuff you're trying to work with.
Since you don't know whether anything you have works, then you won't know if it was already broken or if a miswire broke it, or what the miswire was, etc.
Some devices have engraved labelling, or molded into the plastics, etc. Or on labels. Googling parts of the information on them often leads to wiring information for them, or even manuals on how to operate them. I can clearly see a label on at least two items in your pics, so if you don't see labels on them (your post said none have any) then you may want to take a second look.
And: even if you get it all wired up, it may not be capable of doing what you want the bike to do for you, under your specific riding conditions. So you may have to buy new parts to replace those bits that aren't sufficiently capable. Before you buy new parts, sit down and define a list of what you want the bike to do, and how you want it to do that. (speed, range, acceleration, features). Then make a list of the conditions it has to do this under. (wind, weather, hills (how steep? how long?), road conditions (paved, smooth, rough, gravel, dirt?). Then you can use that to figure out what each part has to be able to do, and then look for new parts that can do those things. (there are threads that help with this, too, if you read around the forum).
