Using the Compact LED Constant Lighting Module is very straight forward.
First, connect the red and black wires to track power. It does not matter which color goes to which rail but for the sake of consistency, red is right rail where normal direction of travel (NDOT) is forward.
Then, connect the blue and white wires to your LED. Blue is positive (+) and white is negative (-).
The unit is made with a 1000 ohm resistor connected to the negative output so additional resistance is not required for typical 3.2fV 20mA LED's when used as shown.
Additional resistance can be added to the circuit to reduce the brightness of the LED's.
If connecting more than one LED to the module, it is best to wire them in series as shown.
If wired in parallel, you will need to add a 1000 ohm resistor to the cathode of each LED.