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Author Topic:   Yamaha Gauges Compatibility
scosh posted 03-11-2008 04:32 PM ET (US)   Profile for scosh   Send Email to scosh  
I just powered my 1995 Boston Whaler Dauntless 13 with a new Yamaha F50 four-cycle outboard motor. The gauges are digital speed and digital tachometer. The Yamaha dealer tells me they are not compatible. Yamaha site seems to indicate adapters are available. What gives?
contender posted 03-11-2008 06:56 PM ET (US)     Profile for contender  Send Email to contender     
Did you purchase Yamaha gauges?
jimh posted 03-11-2008 08:37 PM ET (US)     Profile for jimh  Send Email to jimh     
It sounds like Yamaha customer service would have the final call on this.
jimh posted 03-12-2008 08:33 AM ET (US)     Profile for jimh  Send Email to jimh     
This discussion needs some clarification regarding the term digital. I believe that Yamaha makes a line of gauges which are completely ordinary in their design and connection to the motor, but instead of a dial pointer indicator they use a digital meter readout. Those gauges are not exceptional and can be used with any motor that has a normal tachometer signal output, as long as you can adjust the tachometer calibration to match the number of poles used in the alternator winding. Some of those gauges have other functions built into them for reading trim position and oil levels, but, again, the electrical signals that convey that data are ordinary analogue signals consisting of voltage or current on a dedicated wire conductor.

In modern vessel instrumentation the term digital is now used to mean a system of instrumentation in which there are not individual analogue voltage signals for each instrument, but rather a technique where the data to be displayed is encoded at the engine by the engine's electronic control unit or engine management unit into a serial data stream using digital techniques on a serial data bus that connects between the helm and the engine. The gauges connects to the serial data stream and decode the value they wishes to display from the stream. I do not believe that this level of sophistication has been achieved by Yamaha in their small horsepower range engines, as it would tend to add to the price and the feature would not be that much in demand.

The best source for information about the exact compatibility of a Yamaha instrument with a Yamaha motor is probably the Yamaha company via their friendly customer support staff. (They do have a free dial-in number where you can ask such a question, don't they?)

Casco Bay Outrage posted 03-12-2008 02:42 PM ET (US)     Profile for Casco Bay Outrage  Send Email to Casco Bay Outrage     
They have 3 kinds of gauges.

Command Link

Call Yamaha or go to a dealer and talk to their Yamaha parts expert.


scosh posted 03-12-2008 03:50 PM ET (US)     Profile for scosh  Send Email to scosh     
Now more confused. I bought the 13 dauntless used. It was equipped with Yamaha gauges and controls (hydraulic steering, throttle) I bought the Yamaha engine because I did not want to change the gauges and controls. Engine was new and installed by dealer. Said Tachometer, Speedometer, and fuel tank level gauges were not compatible. Offered to sell a multifunction gauge for some $550. I said no. Got the boat home, checked the gauges-they are all electrical and not analog. The tachometer and speedometer gauges appear to be relatively new, they have buttons to switch modes and info.
Casco Bay Outrage posted 03-12-2008 04:30 PM ET (US)     Profile for Casco Bay Outrage  Send Email to Casco Bay Outrage     
Sorry for that.

Let's forget about Command link for the time being.

I have a 2003 F115 with the digital tach and another digital multifunction gauge. A photo of my gauges is here: photo#5012257039940876930

On my tach (right) I have trim. On the other multifunction gauge (left) shows hours, time, trip, fuel, temp warning etc.

Have a photo of your gauges?

I don't understand why the dealer is saying your gauges are not compatible. Is it they are not compatible with the prior version of the digital gauges? (I see the new version has more features) See this version... Product_Code=6Y5-8350T-82-00

Hope this is helping.

contender posted 03-12-2008 08:07 PM ET (US)     Profile for contender  Send Email to contender     
I would try and get a hold of another dealer tell him what you have and how to connect the new engine to the gauges...good luck
jimh posted 03-12-2008 08:07 PM ET (US)     Profile for jimh  Send Email to jimh     
"...checked the gauges-they are all electrical and not analog."

Now we need clarification of the term analogue.

All these gauges are electrical in nature. The term analogue means that there is a continuous, variable voltage. Digital signals are electrical signals which use binary coding (usually) to send information in a digital fashion using certain fixed voltage levels to represent the values of 0 and 1.

Analogue comes from the root analogous. In electrical signals an analogue signal is a signal in which the voltage (or frequency) of the signal is analogous to the value it represents; a mechanism in which data is represented by continuously variable physical quantities.

Digital comes from the root digits, and means data in the form of especially binary digits.

A mechanical gauge is a gauge which is linked directly to the object being measured, for example a tachometer which is linked mechanically to the crankshaft of the engine. The fuel level gauge on my boat is a mechanical gauge.

davidmassi posted 03-12-2008 09:24 PM ET (US)     Profile for davidmassi    
.....or to simplify what he is getting at (as it relates to your issue)......does the gauge have a dial like an old speedometer, or does the gauge have an LCD number in the center?
scosh posted 03-13-2008 04:11 PM ET (US)     Profile for scosh  Send Email to scosh     
Sorry guys. I feel like I've created a monster.
I took pictures of the gauges but don't know how to send, so I will describe. The Tach is round and reads in numbers. There is no rotating dial. It says "Yahama" at the top and above the readout, it says "tach" The readout portion is within a rectangle within the round gauge. On the right of the readout portion thre are bars to indicate the amount of trim. There is an hour meter on the gauge as well as temp and oil warning indicators. Under the readout portion are two side by side buttons; one reads "set", the other reads "mode" The Speedometer is more of the same. A picture of the exact gauges appear in my owners manual. There are numbers under the gauges (pictures) but I believe that these are picture numbers and not product numbers.
scosh posted 03-13-2008 04:17 PM ET (US)     Profile for scosh  Send Email to scosh     

I just viewed the photo of the gauge (not the one on your boat) My gauge is exactly the same.

seahorse posted 03-13-2008 04:40 PM ET (US)     Profile for seahorse  Send Email to seahorse     
Yamaha has made several versions of their digital gauges over the years.

One common problem with re-powering from a 2-stroke to a 4-stroke is that older gauges do not have OIL PRESSURE alarms, only the NO OIL and LOW OIL alarms. Yamaha also has both 2 wire and 3 wire trim senders which do not work with certain gauges. To top it off, they changed wiring connections on the newest ones. Newer gauges use 3 dip-switches to calibrate the gauge or 2 or 4 stroke, 2 or 3 wire senders, and for 6 or 12 pulse alternators.

Take your gauge to a dealer and have him look up in the Yamaha Rigging Guides to see if yours will work with a newer motor.

davidmassi posted 03-13-2008 05:06 PM ET (US)     Profile for davidmassi    
Seahorse is correct. I am in the process of buying a Yamaha tach right now. They made several versions of this "digital" tach. The were all pretty similar. They read things like engine speed (tach), engine hours, trim, oil level (if its a 2 stroke) and has idiot lights for overheat and oil pressure (4 stroke). Many of these gauges were compatible between different engines and different boats. If it does not plug in and work, there is probably a wiring harness you can get from yamaha to make it work. These tachometer gauges sell for about $500 new.

To now add some confusion, it is a "digital gauge" in that you read an LCD "digital" readout; it is not "digital" in the new computer age where data is transmitted with ones and zeros. Don't worry; just call it a digital gauge and everybody will know what you're talking about.

PMUCCIOLO posted 03-15-2008 07:38 AM ET (US)     Profile for PMUCCIOLO  Send Email to PMUCCIOLO     
Contact Andy Munao, Jr. at Shipyard Island Marine:

He is THE expert on Yamaha outboards and is a great source for motors, parts and accessories.

TRAFFICLAWYER posted 03-16-2008 06:40 PM ET (US)     Profile for TRAFFICLAWYER    
Andy is INDEED the expert.

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