Its real easy!
There are 4 things you need to look at:
1 light
2 clamp for number 1 plug wire
3 Positive battery connection
4 Negative battery connection
Just clamp the positive and negative connections to their respective places. Clamp the clamp around the plug wire and turn on the light if it has a switch. that's about it. If it is a dial back light, start at 0 degrees dial back. Play around with it some. They are pretty fun, especially when you figure out to tune to ear and then look at what the advance is.
If you need any other help just let me know.
Jason