mndrix
05.05.2021 17:53:49
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This has been boggling my mind when I first installed this gauge. Couldn’t understand what was causing this, started driving me crazy. After all, how hard can this be, seriously, 3 connections to make it work and they are the exact same connections as my old (Faria) gauge which by the way works perfectly. The only reason for changing them is to up-grade the looks of my dashboard. I have all new Autometer Pro-Comp marine gauges to replace my existing, but this problem has stopped me dead in my tracks from doing so. If this trim gauge won’t work because of a compatibility issue, then I will not follow through with changing them all out. I do not want a mismatch gauge cluster. Yes, I was told this gauge is for Mercruiser, (as you also were probably told) but somehow I’m beginning to think it will never work correctly. here
been good for a couple of years so far. I know new would be better but damn it’s not a simple job to properly replace them either.
I am going through this exact same problem with Autometer Pro-Comp marine gauges as we speak! My trim gauge is doing exactly the same thing as yours. In fact, after I read your post I just had to register here on River Dave’s so I could comment. more
I called the tech support at Autometer and explained the problem I was having. Unfortunately, the person I spoke with (not mentioning names) wasn’t much help. He said he’s been there 32 years and has never heard of any such problem regarding Mercuiser and the particular trim gauge I was using. He did say however, that maybe at some point Mercruiser changed the ohm rating of their sending units and if so, the gauge will never work. The Autometer gauge needs 0-90 ohms to function properly and that is all they make. He then gave me an email address of someone else in the company to see if they may have any ideas. That was several hours ago, haven’t heard anything back yet. here
I just read your post and OH MY, what a coincidence!
A few weeks ago I ordered the Mercuiser #805134A4 Trim Rotor Sender Kit and installed it the other day. My Trim Gauge Needle was acting eratic and sluggish, so I thought the Sender Rotor Contacts changed the resistance over time and use to where the gauge was out of spec.
Pictures of the operation:
After reassembly and adjustment the Trim Gauge Needle still operated jerky similar to before. There is no corrosion on any of the connections and the inside of the Sender had no indication it was ever wet. The Trim Gauge by itself is working properly and when the Trim Sender unit is moved from stop to stop a resistance change is indicated on my Volt/Ohm meter. here
After reassembly and adjustment the Trim Gauge Needle still operated jerky similar to before. There is no corrosion on any of the connections and the inside of the Sender had no indication it was ever wet. The Trim Gauge by itself is working properly and when the Trim Sender unit is moved from stop to stop a resistance change is indicated on my Volt/Ohm meter.
Trim Sender Cover Removed: more
Also, the GPS receivers on water require much better antennas. I don't have photos, but my GPS module came with a small antenna that worked fine on land, but would not lock on the lake. After I upgraded to an active antenna it worked perfectly.
I ended up using bigger hinges that I used on my test rig, they are beefy and probably overkill, but I'm happy with how solid they feel.
The buttons match the factory power and horn buttons on a 2011 Wakesetter. Originally, I used a color OLED display but I found it to be very difficult to read in the sunlight. I swapped it out for a nifty e-ink screen that is very readable. I'm super happy with the results and it lets me show some information which was helpful in debugging the gate software control. here
The first water tests blew my 10A fuse and I had to go back to dock with a fully extended tab. After replacing it with a 15A, I was good to go.
I just used some 20A relays that I found on Amazon. There's also a 12V to 3.3V converter in there to power the esp32 and a few other things. Its not pretty, but I coated it all with some silicone conformal coating and threw it in a box. more
On the control side a single button push on the side of the surfer will "ARM" the system. It uses the GPS to deploy the gates at 8.5 mph, and retract them at 13.5 mph. A button push on the other side will transfer the wave, and a button push on the arm'd side with disarm the system. When the gates are active the light ring will illuminate. [links]