Collision sensor ribbon cable that connects between fron and rear collision sensor boards in 430X, 430XH, 450X, 450XH, 520, 520H, 550, 550H, 450X EPOS, 450XH EPOS, 550 EPOS, & 550H EPOS models of Husqvarna Automowers. 
 
Video: Collision & Lift Sensor Circuit Explained