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Old 27 October 2007, 13:12   #1
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BRP Evinrude Fuel Gauge.

Anyone know what resistance sender is needed for an Evinrude Gauge?

I've connected mine up and it shoots to full all the time, which I know it isn't (unfortunatly).

The sender resistance on the fuel sender Osprey fitted is a 240/33 Ohm one.
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Old 27 October 2007, 14:09   #2
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Andy, the commander Tach that you have can also display the fuel level from the tank sender (the pink wire)

If you read the instructions for the Commander Tach you can go into set up mode and change from US to EU mode.

US mode is 240 - 33 Ohms
EU mode is 10 - 180 Ohms

I am not certain but you may be able to set the BRP Fuel guage to either setting, (not sure how though).

Chris
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Old 27 October 2007, 14:42   #3
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Thany's handy, I'll wire it up to the commander and see how it works in both modes.

Thanks.
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Old 27 October 2007, 15:01   #4
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Andy if the gauges are digital then you will have to change the sender unit.
me thinks.
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Old 27 October 2007, 18:06   #5
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Wel the Commander mulifunction gauge is a digital display and yes it does read both types of sender. However I wonder if I might have wired up the sender wrong.

I had one wire from the sender to earth and the other to the S (sender terminal on the Gauge. The I terminal (ignition) was wired to the accessory wire of the engine loom. It should be as simple as that!

I'll also check the sender unit to see what resistance I'm getting.

The sender is one of those pillar type ones, is there anything I should know about these?
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Old 28 October 2007, 04:25   #6
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Andy the Commander gauge will be able to use your existing sender just fine, Top Banana is talking about the all digital i-Command gauges which are the new style NMEA gauges.

Although the commander gauge does have a digital display its not a fully digital system.

My Fuel Gauge is buggered and does what your does just sits at full all the time, dont rule out a faulty gauge.

I would connect up your commander tach and see what fuel level it gives you if it reads correct then you have to look to the gauge.

BTW your wiring sounds spot on.

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Old 28 October 2007, 06:25   #7
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Well it's piddling down with rain and a F6/7 here, so a good call not to go on Sea trials today

When or it the rain stops I'm gonna have a play around.

First I'm going to test the meter by disconnecting the sender and switching on, then I'm going to ground out the sender terminal and see what happens (can never remember if the gauge should be reading full or empty when grounded). If I get the desired results I'll turn my attention to the Sender unit and check resistance across the terminals, again I don't know what Ohms I should expect with the fuel level which is a 3rd full. Is 33 Ohms full or empty for a sender?

I'l post the results and findings later.
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Old 28 October 2007, 12:07   #8
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Ok, I couldn't wait and got wet

Did the testing of the gauge and sender, everything looked OK.

I decided to wire the earth point (that I thought was for the instrument light) on the gauge to earth and hey presto she works!

I've never come across this before. All the gauges I've used have a live/hot terminal and one to the sender, then the senders earthed. The only other connections are for the light.

So why three wires?

Thanks guys for you help.

PS; is there any way I can wire one sender into two gauges, the analouge one and the multi-function Tachometer?
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Old 28 October 2007, 12:41   #9
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Originally Posted by Hightower View Post
I decided to wire the earth point (that I thought was for the instrument light) on the gauge to earth and hey presto she works!

yew twatt. i towld yew dat orlreddy

reemembir dis

itt orl dipends onn wevver de nobbur dat fittid dem woz pist orr nott. de wyre from de centre ov de sennder shud gow too de fkin gage conekshun S an a wyre froom I to Batt +. de wyre from de syde ov de sennder shud gow to de fkin clokk az wel wiv a wyre from dis conekshun too erth

gaRf
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Old 28 October 2007, 14:47   #10
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Acually you did Garf, humble appologies for having a memory of a Goldfish
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