36Barracuda 2LP Installation Guide, Rev. E
N/ND drives
Synchronizing spindles
Use pins 5 and 6 on the J4 connector to attach the spindle sync cable. See Figure 8.
Pin 1
J2
J4
J4
Pin 1 (front view of J4)
Pin 2 
Pin 1 
Spindle sync cable connector
Spindle Sync Reference 
Spindle Sync Ground
