Bennett Marine EIC5000 Electronic Indicator Control - Manual (Page 6)

Electro-Hydraulic System Information
EIC Relay Module Fuse: 12 volt system uses 20 amp in-line fuse on positive, 24 volt uses 10 amp.
EIC Display Fuses: Both Purple and Orange wire fused at 1.5 amp for both 12 and 24 volts.
Hydraulic Power Unit and EIC Module Wiring
Red = Port Valve
Green = Starboard Valve
Yellow = Motor Reverse (pump retract)
Blue = Motor Forward (pump pressure)
Black on HPU = Connects to Ground Stud on EIC Module
Orange on EIC Module = Positive
Black on EIC Module = Ground (boat’s electrical system)
Troubleshooting
If Trim Tabs do nothing, no movement, no sound from HPU:
Inspect 20 amp fuse on Orange wire at Relay Module and 1.5 amp fuse on Orange wire at display.
Inspect all wiring for disconnected or corroded connections.
HPU running but Trim Tabs do not move, or will go down but not retract:
Is the unit receiving a solid 12 volts to the EIC Module? Low voltage will sometimes cause the
solenoids to not open preventing the tabs from moving even though the pump motor is running.
Inspect all wiring for disconnected or corroded connections.
Conduct the following test using the “Spare for Auto Tab Control” connector at the EIC Module:
Operation = Reaction
Apply 12 volts (+)to blue, red = Port trim tab down
Apply 12 volts (+)to blue, green = Starboard trim tab down
Apply 12 volts (+)to blue, red, green = Both trim tabs down
Apply 12 volts (+)to yellow, red = Port trim tab up
Apply 12 volts (+)to yellow, green = Starboard trim tab up
Apply 12 volts (+)to yellow, red, green = Both trim tabs up
If the trim tabs function correctly for each wire grouping, then the Display or EIC Wire Harness is at
fault.
If the system does not function properly, then conduct the same test using the wire harness
connected to the HPU. If the trim tabs function correctly then the Module is faulty. If the trim tabs
do not function correctly, the HPU is at fault.
(This general information is not intended to be complete. Please feel free to contact Bennett Marine at
954.427.1400 or visit our website at www.BennettTrimTabs.com for additional information.)