Glowire requires two double A alkalines and are used in a transformer case. Small and light. In the four engine airplane shown flying above there are actually two strings and power supplies of Glowire runing internally and those areas of the airplane are covered in clear yellow mono coat. Notice they are virtually invisable and in this installation were a complete failure used in this way so that airplane is dependant upon the incandescents on the three corners.

My newest night flyer now has internal Led string that are far more effective. Used externally along wing edges etc and on small electrics that are flown close in the glowire would be fine but not for larger glow powered night flyers expecially in used internally with cleartint film covering.

Here is a picture of my newest with internal led strings in addition to the incandescent orientation lights. Is only just started flying with no night flights yet.