I have some Chinese-English instructions I found on AliExpress that is different but the image of the digital dash they were selling was the same. It may have some additional details that might help program these dash units.
Excuse the images, I figure folks want the full resolution images to see details properly so I have included those in the zip file along with Autodesk drawing and Connector photos and Wire Connection Specifications. The text is actually just image files so I couldn't do a simple copy/paste here.
File ZIP Archive
https://drive.google.com/file/d/1lMm...usp=share_link
Edit: I found a foreign language youtube video of someone ordering and wiring one of these into their quad bike. Linking this as well. The time queue feature is not working with the forum so you will have to manually fast forwad the video to where the setup starts. Around 6 minutes and 10 seconds into the video.
Also find this Italian video. This one seems to have instructions that match the documents I have in the zip file.