Connecting the ECU to Power
WARNING
When connecting the power cable, do not remove the in-line fuse holder. To prevent the possibility of injury or
product damage caused by fire or overheating, the appropriate fuse must be in place as indicated in the product
specifications. In addition, connecting the power cable without the appropriate fuse in place voids the product
warranty.
You should connect the ECU power cable directly to the boat battery, if possible. Although it is not
recommended, if you connect the power cable to a terminal block or other source, you must connect it through
a 40 A fuse.
If you plan to route the ECU power through a breaker or a switch near the helm, you should consider using an
appropriately sized relay and control wire instead of extending the ECU power cable.
1 Route the connector-terminated end of the ECU power cable to the ECU, but do not connect it to the ECU.
2 Route the bare-wire end of the ECU power cable to the boat battery.
If the wire is not long enough, it can be extended (
Power Cable Extensions, page 9
).
3 Connect the black wire (-) to the negative (-) terminal of the battery, and connect the red wire (+) to the
positive (+) terminal of the battery.
4 After you install all of the other autopilot components, connect the power cable to the ECU.
NOTICE
You should apply dielectric grease to the pin holes on the cable connector to prevent corrosion, especially if
you are using the autopilot system in saltwater.
Power Cable Extensions
If necessary, you can extend the power cable using the appropriate wire gauge for the length of the extension.
Item
Description
Fuse
Battery
9 ft. (2.7 m) no extension
9
