They use some type of proprietery connector, probably won't be able to find it anywhere. What you could do I suppose is to cut off the conector leaving about a foot of coax on it, then purchase some RG-174 (I think thats what it is) coax, and two each female and male crimp on SMA style connectors and construct your own "extension cord." This would however introduce a good bit of loss into the system due to the frequency at which the GPS signals are at and could lead to more error than just placing the antenna on the dash or locating it somewere else on the outside of the vehicle that would a