Is the green or red solenoid replaceable? Starboard trim tab does not work. switched the hyd line with port, and it worked fine. Also did the electrical wire switching at the control panel, still did not work.

They both are.
green wire
http://www.bennetttrimtabs.com/catal...?vID=218&cID=7
red wire
http://www.bennetttrimtabs.com/catal...?vID=217&cID=7

Thank you, after a lot internet reading, I found the part and read how to replace after my post.