Inner wiring harness used in 430X, 430XH, 450X, 450XH, 520, 520H, 550, 550H, 450X EPOS, 450XH EPOS, 520 EPOS, 520H EPOS, 550 EPOS & 550H EPOS models of Husqvarna Automowers. This is the charging harness that is located inside the Automower's lower chassis and connects the charging plates on the nose of the mower to the mower's main board. The original version of this harness was a double blue wire. Husqvarna changed it briefly to a blue and a yellow wire, but then updated it once again to the current blue and a brown wire to match the wires in the charging contact harness in the nose of the mower. 
 
Click HERE for more information about this part
 
Attention! Is your 450X, 450XH, 550, or 550H not charging properly? Then please watch THIS video for information as to what may be causing the issue. 
https://youtu.be/nU69uyAU-WE
 
Previous part numbers: 
580370702
531144503
534156602