I pulled this off the Bennett site, you can also call their tech support. I've called them in the past they were pretty helpful. (954) 427-1400
If HPU motor runs but trim tabs do not move: • Inspect for disconnected or corroded red and green wire connections at helm control and quick-disconnect plug. • The following test can be used to help isolate a malfunction. Remove wires from helm control and touch together as follows: Operation R eaction Orange ( + ), blue, red Port trim tab down Orange ( + ), blue, green Starboard trim tab down Orange ( + ), blue, red, green Both trim tabs down Orange ( + ), yellow, red Port trim tab up Orange ( + ), yellow, green Starboard trim tab up Orange ( + ), yellow, red, green Both trim tabs up If trim tabs function in each of the above combinations, check helm control. If during this test trim tabs continue to malfunction, inspect HPU.
_________________ 2004 Vista 298 Twin 5.7L Volvo Penta GXi-E
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