Yes maybe some wire to reach the engine bay and a "add a fuse" that's it.
There is only 3 wire to connect 12V, Ground and Signal from either the injector or the coil pack.
You can download the manual from the website I provided under the picture with all the explanation on how it work.
It will come with what you see on the picture : the 2 manual and the shift light.
You might need some tape or velcro to fix it on your dash