Step 9: Lights - Spot Lights
What you need
Some sort of spot light
Step 1: For me, nothing had to be done, but normally you would wire the inputs in parallel.
Step 2: Glue the lights onto the rail. This is important if you want to aim the lights: The lights only pivot forward or back, so the one in the middle should be perpendicular to the rail. The two other lights should be at an angle perpendicular to the rail. See picture 2.
Step 3: Continue the wire to the end of the rail
Step 4: Continue on later