Yamaha gauge colors ,

[Grandpaw]

Need a little help ,
Yamaha OX 66 , , new purchase

Tac gauge operating

Speed gauge blank , noticed a number of wires disconnected , , color matched loose wiring , and zeros displayed

There are a few more wires that are not connected ??

White off speed not connected too anything
White with blue stripe off of speed , loose

Blue off of tac & speed goes into 4 prong connector but no blue is coming up off of harness too connect 2
There are other colors , green , yellow , red with open cavities ,
blue is for back lights , can it be plugged into red or yellow , green or not required

thanks