Connecting to an Existing Drive Unit
You must install a drive unit power cable to use a drive unit not sold by Garmin with the Reactor 40 Mechanical
autopilot. This cable is sold separately.
These instructions do not apply to a solenoid-type drive unit (
Connecting to a Solenoid Drive Unit, page 13
).
1 If necessary, use the installation instructions provided with the drive unit to install it on your boat.
2 If your drive unit has cables connected, disconnect the cables.
3 Consult the documentation provided by the manufacturer of your drive unit to identify the connections on
your drive unit.
4 Connect the drive unit power cable (not included) to your drive unit, based on the wire colors and functions in
the table.
The drive unit power cable cannot be extended.
Wire Color
Function
Red
Drive unit positive (+)
Black
Drive unit negative (-)
Blue
Clutch power (cut and tape this wire if your drive unit has no clutch)
White
Clutch ground (cut and tape this wire if your drive unit has no clutch)
5 Connect the drive unit 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.
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