Here is he wiring for Boat Leveler (as we last checked).
green=Port Valve
white= Starboard Valve
red=Motor Forward (pump pressure)
yellow= Motor Reverse (pump retract)
black on HPU=Ground
red on Helm=Control Positive
If I am correct on the wiring then here is how you can test it.
Remove the wires from the helm control and touch together as follows:
Operation=Reaction
(+), Red, Green=Port trim tab down
(+), Red, White=Starboard trim tab down
(+), Red, Green, White=both trim tabs down
(+), Yellow, Green=Port trim tab up
(+), Yellow, White=Starboard trim tab up
(+), Yellow, White, Green=both trim tabs up
If the trim tabs function correctly for each wire grouping then the switch is at fault. Also note that any loose or missing screws on the back of the switch (whether a wire is connected there or not) can cause the pump to malfunction.
This test may also be done right at the pump by using a hot lead. There is usually a connector to the wire harness within a foot or so of the pump. You want to check this connection for corrosion. You may wish to cut the connector off on the pump side and try the test on bare wires.
If you test right at the pump and still no go, then the pump is at fault.
If you suspect corrosion on the wire connector near the pump, cut it out, test as above and reconnect using butt splices.
Here is a link to the Insta Trim / Boat Leveler website,
Home - Insta-Trim Boat Levelers I could not find a troubleshooting guide there but confirmed the wiring colors so the troubleshooting should be good. It is worth going over this before turning it over to a mechanic since it is likely an easy problem to isolate and fix.
I hope this helps, let me know if you have any questions.
Tom McGow
Bennett Marine
Re: Trim tabs make sound but do nothing.
