12V is used more often than 5V for outdoor shows. This vendor is very popular, and also has a discussion about 12V vs. 5V: https://www.holidaycoro.com/kb_result

12V is used more often than 5V for outdoor shows. This vendor is very popular, and also has a discussion about 12V vs. 5V: https://www.holidaycoro.com/kb_results.asp?ID=126 https://www.holidaycoro.com/kb_results.asp?ID=126 Also, the xConnect pigtails are great for wiring up large shows and for adding longer run extension cables.