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#11369867 - 01/25/16 07:23 PM 97 Stratos 201 PE fuel gauge power wire question
Gonzz Offline
Extreme Angler

Registered: 12/06/09
Posts: 2104
Loc: Midlothian, TX
Where does the fuel gauge get it's power from? I checked the ignition power wire at the fuel gauge and no power. I am getting power to the light wire at the gauge. Is there a fuse in the circuit? Trying to find it. Thanks
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1997 Stratos 201 PE W/ 97 Johnson Venom 225
USAF Retired






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#11370090 - 01/25/16 08:16 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
SteezMacQueen Online   sleepy
TFF Team Angler

Registered: 11/02/14
Posts: 4435
Loc: Red Oak, Galveston, and Pagosa...
Ummmm I am not 100% on this. Maybe 99%. But, I am pretty sure that the sending unit doesn't get "power" as in +12volts. The gauge does for lighting only. The fuel level part of the gauge is simply an ohm meter reading variance to ground caused by the fuel level float connected to a rheostat changing impedance as the fuel level increased or decreases.
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#11370146 - 01/25/16 08:26 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Gonzz Offline
Extreme Angler

Registered: 12/06/09
Posts: 2104
Loc: Midlothian, TX
Not talking about the sender. The gauge itself. It has a ignition 12v connection
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1997 Stratos 201 PE W/ 97 Johnson Venom 225
USAF Retired






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#11370389 - 01/25/16 09:41 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Happy Birthday northtexascrappiehunter Offline
TFF Celebrity

Registered: 02/21/09
Posts: 5371
Loc: Corinth Texas
on a whole lot of boats the "ignition" wire is purple. when the key is turned to the on position there should be 12 volts to the gauges also. if there isnt then simply jump from another gauge. make sure your using a good ground when testing with a test light
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#11370457 - 01/25/16 10:03 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Flippin-Out Online   content
Extreme Angler

Registered: 02/25/15
Posts: 2009
Loc: Magnolia, TX
It's correct that your fuel gauge is just a special purpose ohmmeter. It does need a power source to measure the resistance of the tank's sender. Yes, the marine standard is for an ignition-switched power source wire to be purple. If you look at all the other gauges you will see that most have a purple connection. (Water pressure won't though, for instance.) Insure that the 12V terminal of the fuel gauge is somehow daisy-chained to at least one of the other gauges that are on the purple wire chain. I have never seen a Stratos with any factory fusing on the gauge power wiring. (I have owned 2 and worked on numerous others.)

You say "I checked the ignition power wire at the fuel gauge and no power." When you checked this, where did you put the other lead of the voltmeter? (Be sure you put it on a valid Ground.) If you tried using the GND connection on the gauge, measure again and use a GND elsewhere, like a gauge you know is working (boat's voltmeter?) In this way, you can discover if the broken circuit is on the + or - terminal of the fuel gauge.

When you turn on the NAV lights, is the face of the gauge illuminated correctly? This would tell me the GND is probably good.

Has this gauge ever worked? New issue or?


Edited by Flippin-Out (01/25/16 10:06 PM)

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#11370709 - 01/26/16 04:09 AM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2235
Loc: ft worth
Originally Posted By: Gonzz
Where does the fuel gauge get it's power from? I checked the ignition power wire at the fuel gauge and no power. I am getting power to the light wire at the gauge. Is there a fuse in the circuit? Trying to find it. Thanks


pretty much what ntch says.....

no fuse...purple wire.. same as ign. purple on tha tach.... tach works, you can pick up purple from there or trace from fuel gauge back to where it originates and repair... gauge ground should be good if light works...

gauge lights will be blue...JAN, colors may vary if some hack has been under tha dash!


Edited by TLW (01/26/16 05:31 AM)

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#11370978 - 01/26/16 08:23 AM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Flippin-Out Online   content
Extreme Angler

Registered: 02/25/15
Posts: 2009
Loc: Magnolia, TX
I have seen gauges that have a dedicated GND for the lamp, and another GND post for the gauge itself. In those instances, the dedicated lamp wiring is attached to the bulb base assembly that gets removed to replace the bulb.

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#11370986 - 01/26/16 08:24 AM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11195
Loc: Littlefield Tx & Lake A. H. US...
The ignition wire? No ignition power post on 2 cycle outboards. The fuel gauge gets its power from the accessory post of the ignition switch. [img]http://texasfishingforum.com/forums/pics...wiring_diagram_[/img]
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#11371279 - 01/26/16 10:05 AM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2235
Loc: ft worth
post on tach should be labeled "IGN." with tha "key switched hot" purple is tha one i'm referin' to Gary......

tach and fuel or "normally" tha only two dash things (gauges) that power up with ign switched hot (purple)... others along with lights and acc. power up with a different switch power (red) from battery.


Edited by TLW (01/26/16 10:18 AM)

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#11371624 - 01/26/16 12:26 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Gonzz Offline
Extreme Angler

Registered: 12/06/09
Posts: 2104
Loc: Midlothian, TX
The fuel gauge has one connection labeled ignition, ground and sender.
_________________________
1997 Stratos 201 PE W/ 97 Johnson Venom 225
USAF Retired






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#11371900 - 01/26/16 02:43 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2235
Loc: ft worth
Originally Posted By: Gonzz
Where does the fuel gauge get it's power from? I checked the ignition power wire at the fuel gauge and no power.


re-read and shoulda ask first!...............
checkin' ign post (purple wire) with key on or off?

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#11371922 - 01/26/16 02:49 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: TLW]
Flippin-Out Online   content
Extreme Angler

Registered: 02/25/15
Posts: 2009
Loc: Magnolia, TX
Originally Posted By: TLW
Originally Posted By: Gonzz
Where does the fuel gauge get it's power from? I checked the ignition power wire at the fuel gauge and no power.


re-read and shoulda ask first!...............
checkin' ign post (purple wire) with key on or off?


Very good point TLW! Now let's see what he says! Gonzz, I'm curious why you are checking this in the first place. Please elaborate. I assume your 201 has twin tanks. With ignition ON, does the needle jump as you switch the electrical switch from tank 1 to tank 2? (That's only going to switch where the gauge reads from, but it should jump the needle typically if the gauge has power.)


Edited by Flippin-Out (01/26/16 02:53 PM)

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#11371968 - 01/26/16 03:07 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
Gonzz Offline
Extreme Angler

Registered: 12/06/09
Posts: 2104
Loc: Midlothian, TX
I have a single 50 gallon tank. I am turning the key to ignition. No power on purple wire. Gauge needle don't move at all. I just bought a new fuel gauge and will install it tonight.


Edited by Gonzz (01/26/16 03:09 PM)
_________________________
1997 Stratos 201 PE W/ 97 Johnson Venom 225
USAF Retired






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#11372000 - 01/26/16 03:26 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2235
Loc: ft worth
with NO power on purple a new gauge won't work either.. gotta have 12v on purple with key in "on" position.....

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#11372022 - 01/26/16 03:35 PM Re: 97 Stratos 201 PE fuel gauge power wire question [Re: Gonzz]
TLW Offline
Extreme Angler

Registered: 11/16/06
Posts: 2235
Loc: ft worth
are you checkin' purple to tha guage ground? if so recheck purple to a different ground on one of tha other gauges..this will eliminate tha ground as tha problem....

does your tach work?


Edited by TLW (01/26/16 03:42 PM)

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