This is a great read, looking back at the mess it was to get the Main Street Electrical Parade up and running in 1972.
http://www.latimes.com/travel/theme...-street-electrical-parade-20161212-story.html
>>The beloved low-tech parade of lights, which made its debut in 1972, almost didn’t make it to Disneyland’s Main Street USA. During a dress rehearsal in the run-up to the launch, a third of the floats were unfinished, sparks flew from the performers’ lighted costumes and one parade unit crashed into a building.<<
http://www.latimes.com/travel/theme...-street-electrical-parade-20161212-story.html
>>The beloved low-tech parade of lights, which made its debut in 1972, almost didn’t make it to Disneyland’s Main Street USA. During a dress rehearsal in the run-up to the launch, a third of the floats were unfinished, sparks flew from the performers’ lighted costumes and one parade unit crashed into a building.<<