accepts the latch pin 18 the ground supply free plug connector is coupled to the aircraft fixed receptacle connector 1 and aircraft panel 29 a wire lanyard 28 is connected to the slide latch fastener 6 that is mounted onto the aircraft panel 29 which engages in a coupled position the latch pin 18 via a machined in groove 20 at the front end of the latch pin 18 within the ground supply free plug connector 16 are four hermaphorditic high amperage power contacts 4 a and two conventional relay socket contacts 26 dimensionally arranged to couple with the power contacts 4 and relay pin contact 5 contained in the aircraft fixed receptacle connector 1 surrounding the four power contacts 4 a at their distal engaging ends are holes 25 with a flat section 27 these holes 25 accept the creepage barrier tubes 24 a that form part of the mating face 24 of the aircraft fixed receptacle connector 1 as described above and seen in fig7 10 the ground supply free plug connector 16 includes the male boss 21 cavity 23 key 22 boss 17 latch pin 18 with groove 20 plurality of power 4 a and relay socket 26 contacts holes 25 with a flat section 27 and the environmentally sealing backshell 35 this embodiment construction shows a full metal housing 37 designed to withstand physical abuse and extreme weather.