Hi bro,u can install it at accesories shop,ask wireman help u to intall.
The item copleted with harness,long wire,shift light.
And this is Japan Product.
Bro,
RM100 include shipping.
Sorry bro...
The item only come with meter,shift light and the wiring.
Diagram dont have.
But u can ask accesories shop wireman to help u to install.
Thank you