Slight Bulge In My Batteries

Jan 11, 2014
11,319
Sabre 362 113 Fair Haven, NY
The fuse on the negative side of the ACR is consistent with the instructions from Blue Sea. There is a good reason for this deviation from the norm, and for the life of me I can't remember it. If I recall correctly, it is for the LED indicator lights and the start interrupt circuits. But I wouldn't stake your life on it.
 

Ward H

.
Nov 7, 2011
3,645
Catalina 30 Mk II Barnegat, NJ
Yep, as @dlochner said. Clipped this from the Blue Sea SI ACR wiring instructions.
"Connect the quick connect terminal marked GND (ground) to the DC system ground through
a one amp in-line fuse to prevent fault currents from flowing in this wire."