Hiya,<br /><br />Some background: <br /><br />My V150 has a tilt/trim gauge (that always reads full up), and on the control it has "trim" buttons (up and down) where your thumb would be and a "trailer" button down lower on the lever. The "trim up" button hasn't worked for eons, so we've been using the "trailer" button for that. There is only one hydraulic cylinder actually on the back, so the "trim" button is used to activate the cylinder on the bottom portion and keeps you from trimming up too outrageously by mistake. The t/t itself works fine... stops at the bottom and top of the working range like it should.<br /><br />There are 2 tilt/trim sensors on the motor. I finally got around to looking at them last weekend (while winterizing). I pulled the starboard side one first, and there are 2 little plastic tabs that are supposed to be attached to a plastic pin in the center. One tab fell out when I removed to sensor. <br /><br />Questions:<br />I figured that the starboard side sensor likely is caput and would normally send a signal to the trim meter and that maybe (?) somehow, the control uses this signal to disable the "trim up" button. (?) Is this how it would work, or is there a separate signal for the meter?<br /><br />What's the port side trim sensor used for? To tell the T/T pump the ends of the working range?<br /><br />How do the sensors work? The little plastic tabs are very flimsy and it doesn't seem like they're supposed to rotate or anything. In the hole that they mount into, there's a slot that they fit into (that look a bit dirty/corroded on my motor), but I can't imagine how these things relay trim position, since the whole thing, the sensor and part of the bracket that they attach to lifts up as you trim.<br /><br />Any insight you can provide would be appreciated.<br /><br />Thanks!<br /><br />Brent