In the center of this configuration is a circuit board. The length of the tail strobe wire from the circuit board is about 48". There is a "Y" in the wingtip strobe wire which occurs about 13" from the circuit board. The length of the wire from that point is approximately 61". The distance from the "Y" to each wing tip light is about 49". A 9V alkaline battery will provide many hours of operation and result in the lowest possible system weight. A 6- or 7-cell NiCd pack may be used to light the system for extensive use.