04-05-2008, 06:15 PM
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CC Member
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Join Date: Feb 2007
Location: Austin,
TX
Cobra Make, Engine: Lonestar Classics, 302 stroked to 347; Metallic British Racing Green
Posts: 595
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Not Ranked
Electrical Interference
Let me start this off with an apology to the 'purists'...(that I would LOVE to put in tiny font...  )
I HAVE A RADIO IN MY COBRA...aaaaaaaaaaaaaaaaaaagh
Now, with that mea culpa out of the way, here's the problem...
When I turn the radio up loud (is there any other way to hear the damn thing...lol), the fuel gauge needle swings across the gauge in beat with the bass of whatever is playing!
The fuel sender doesn't share a common earth with the radio, so I can think of only two reasons (and I have checked both!!!)...
1) Their is induction/interference across the speaker wire and it is close to either the fuel sender wire, OR the fuel gauge ground
or
2) the radio and the fuel gauge share a common ground and I am getting induction/interference this way.
any suggestions, observations or insights would be appreciated
Glyn
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Cave magister imperitus - Beware the inexperienced teacher
"No, I DON'T have an accent, this is how English sounds when it is pronounced correctly!"
Last edited by GlynMeek; 04-05-2008 at 08:48 PM..
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