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Fuel tank wiring

JwWright57

Well Known Member
Hi all, I can’t find any reference for the connection of these wires. I looked through the plans and can’t find anything. Where dies the Q6300 wire come from and what does it connect to? Same for the Q6073.....
 

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The Org/Brn wire connects to the fuel level sender.
The black wire is a ground wire and it connects to a fuel level sender mounting screw.
Use a star type lock washer to achieve a good electrical connection.
 
Those look to come from your Dynon or Garmin Glass EFIS wiring harness and they attach to the fuel sending unit mounted on your fuel tank that tells you what your fuel level is, electronically.

You should have a 6 or 7" diameter sending unit mounted towards the front side of the plane on your fuel tank, a big round ring of screws holds it in the tank with the float level sensor. One wire, the orange brown wire, is the hot wire and attaches to spade lug on the sensor, I would think, the other serves as a ground wire.
 
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It looks like the wiring diagram shows the fuel sender wire connecting to the central screw on the sender and the ground attaching to the spade terminal attached to one of the mounting screws
 

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