Arduino: Making a set of traffic lights

Step 6 Resistors

Using the 220 ohm resistors wire from the LEDs across the divider to the same row on the opposite side, (See 2nd image for example) and repeat for all the LEDs.

Add the white LED beween the Piezo and button and add a resistor to that LED also.

The 3rd image below shows the final result. (note the GREEN wire is not necessary, unless your circuit doesn't work like mine did, it joins the top half of the boards power rails to the bottom half as some boards are split).