If so you will need to take the main 15amp circuit in to the transformer, then use a project circuit board to transfer power to each unit at the same time. You will also need resistors at each light to make sure you are not over powering each one. There is quite a bit of soldering and math evolved to make sure you get the right resistance. https://www.amazon.com/Parts-Express-Perforated-Board-320-430/dp/B0002ZPUDK/ref=asc_df_B0002ZPUDK/?tag=hyprod-20&linkCode=df0&hvadid=652406883519&hvpos=&hvnetw=g&hvrand=13557009144179615286&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9031543&hvtargid=pla-2062462398209&psc=1&gclid=EAIaIQobChMI_-zDmJb__gIVdDStBh3e1gyKEAQYAyABEgIByPD_BwE