I bought a GQ8 e-scooter then started having trouble with what I thought was the throttle
What were the specific symptoms you were seeing? What happened just before the problem began? What suggests it to be a throttle issue?
I took it to a recommended mechanic but instead of finding the problem and fixing it he took it apart and used my battery and other parts on his own bike
I'd recommend posting who that was so others can avoid them, since that would usually be considered theft to take customer parts for their own use.
so after I took it I’m having to put it back together and the wiring guide on my controller can’t be found anywhere
What we will need in order to help you is for you to trace out what wires you have on each device on your scooter, and have you make yourself a diagram of all of those, and post it here.
The easiest way is using paper and pens, markers, or even crayons to get different colors for different wires (if you can see the actual wires and don't have sealed connectors), then take pictures of the drawing and post them here in your thread as an image.
I'd draw it up as blocks for each thing, like a controller block with all it's wires going out to each of it's connectors, indicating how many pins or wires are on each of these connectors, and a display block with all it's wires to each of it's connecotrs, etc., for every individually separate thing on the scooter that has a wire going to it.
Then post actual images of the individual connectors on each device, with a notation for what each one is from.
Then we can help you figure out which connector plugs into which other connector, and for those that we aren't sure of, have you make some electrical measurements with a multimeter to see what they come from, go to, etc.
