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  #1  
Old 05-21-2020, 06:52 AM
edclee edclee is offline
 
Join Date: Aug 2008
Location: Lancaster, SC
Posts: 222
Default Connection diagram for Vans analog fuel gauge

I have 1998 vintage vans analog fuel gauges on my RV-9A and need to do some troubleshooting. Does anyone have a description of the wire connections to it?
Ed
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  #2  
Old 05-21-2020, 07:06 AM
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rv8bldr rv8bldr is offline
 
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Location: Pakenham, Ontario, Canada
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Quote:
Originally Posted by edclee View Post
I have 1998 vintage vans analog fuel gauges on my RV-9A and need to do some troubleshooting. Does anyone have a description of the wire connections to it?
Ed
Hi Ed

On the back of the instrument there are labelled connections:

S - this comes from the center screw of the fuel sender (Stewart Warner on my old RV-8)
I - this is 12VDC in
G - this comes from the sender ground: I used one of the screws holding the sender to the tank access plate with a ring terminal

The two wires at the top are for instrument backlighting. I had these going to a dimmer pot.

Cheers

Mark
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  #3  
Old 05-21-2020, 09:29 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by edclee View Post
Does anyone have a description of the wire connections to it?
From the Van's Aircraft web site

https://www.vansaircraft.com/faq/gau...-instructions/
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  #4  
Old 07-26-2020, 04:42 AM
fazlo fazlo is offline
 
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Location: Paris, France
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would someone know the amperage of these analog gauges ( without light) so that I can select the appropriate breaker. Thank you
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  #5  
Old 07-26-2020, 09:38 AM
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pjc pjc is offline
 
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Location: Tampa, FL
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Default Intermittent Fuel Level

My left tank gauge (early RV-6 with sensor, gauge, and wiring as in the drawing Scott posted above) is reading intermittently. It provides either a plausibly correct reading or empty. The wiring at the gauge appears solid and wiggling wires there doesnít cause or resolve the problem.

I suspect either an intermittent connection (power or ground) at the level sensor, or a sticky float mechanism. I suspect the latter only because occasionally rocking the wings on the ground will resolve the non-reading gauge (not sure how the subsequent failure, instantly falling to zero happens in that case however).

Looking for anyone with similar experiences or suggestions on how to troubleshoot further (ideally postponing opening the tank access panel to a last resort).

Thanks,
Peter
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  #6  
Old 07-26-2020, 09:51 PM
gasman gasman is offline
 
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Location: Sonoma County
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Quote:
Originally Posted by pjc View Post
My left tank gauge (early RV-6 with sensor, gauge, and wiring as in the drawing Scott posted above) is reading intermittently. It provides either a plausibly correct reading or empty. The wiring at the gauge appears solid and wiggling wires there doesnít cause or resolve the problem.

I suspect either an intermittent connection (power or ground) at the level sensor, or a sticky float mechanism. I suspect the latter only because occasionally rocking the wings on the ground will resolve the non-reading gauge (not sure how the subsequent failure, instantly falling to zero happens in that case however).

Looking for anyone with similar experiences or suggestions on how to troubleshoot further (ideally postponing opening the tank access panel to a last resort).

Thanks,
Peter
You can go back to ........ https://vansairforce.net/community/s...48&postcount=3 and scroll down to the section that you need to troubleshoot the fuel gauge.
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  #7  
Old 07-26-2020, 10:02 PM
gasman gasman is offline
 
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Quote:
Originally Posted by fazlo View Post
would someone know the amperage of these analog gauges ( without light) so that I can select the appropriate breaker. Thank you
The proper breaker to use is based on the size of the wire, not the load on the wire.
Van's instructions for their gauges recommend 18GA wire.
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  #8  
Old 07-27-2020, 07:35 AM
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Quote:
Originally Posted by gasman View Post
You can go back to ........ https://vansairforce.net/community/s...48&postcount=3 and scroll down to the section that you need to troubleshoot the fuel gauge.
Thanks, I didnít realize that additional info was there. Very helpful.
Peter
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