For 6, 12 & 24 volt applications.

13871: 4 Pole shrouded connector. Set consists of: one 12" color coded lead wire to trailer side and one 12" color coded lead wire to car side.
13891: 4 Pole shrouded connector, trailer side. 12" color coded lead wire.
13901: 4 Pole square shrouded connector, trunk side. 48" color coded lead wire.