7
Connection
IMPORTANT
! In retrofit installations, disconnect the wires from the old control panel before connecting
the ACS. It should not be connected in parallel with the old panel.
Switch off the main circuit breaker before starting the connection!
Hydraulic trim tabs
Hydraulic trim tabs, such as Bennett, Instatrim, QL and Trimmaster use a hydraulic pump unit to extend
and retract the actuators. The pump unit is situated in the rear of the boat and connected to the
battery's negative (-) terminal. From the pump unit, a wire harness is routed to the ACS.
Connect the wires to the ACS terminals 3, 4, 5, 6, according to the figure that follows. Terminals 5 and 6
are connected to the pump’s motor and terminals 3 and 4 to the valves controlling the trim tabs.
The table below shows the colours used by the major manufacturers of hydraulic trim tabs.
Corresponding ACS markings are shown in the left column.
ACS
marking
Instatrim
(QL)
Bennett
Trim-
master
3
Green
Red
Green
4
White
Green
White
5
Yellow
Yellow
Yellow
6
Red
Blue
Red
10...30V dc (+)
(-)
15A(F)
M
1 2 3 4 5 6 7
3
4
5
6
