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Another Heated Pitot Wiring Question

A

azflyer21

Well Known Member
I have the Dynon heated pitot with controller. The question I have is Does the Van's wiring harness for the left wing have wires for the controller? I have never been good with reading wiring diagrams.
 
I put all the wires for the pitot tube in wing just in case (with enough wire to reach cabin). (14 Ga) IIRC, one power wire supplies controller which in turn supplies the pitot tube itself.

In talking with Steinair folks during my panel build it turns out the harness has a power supply for pitot in one of the molex connectors but not a ground - so I'll run my ground wire to the grounding block but use the molex supply for my hot.

Since you have Dynon may be different (I'm using Garmin) but I'm sure if you give the guys at Steinair a call (Josh is the RV14 guru) they will give you the information you need.
 
mturnerb said:
I put all the wires for the pitot tube in wing just in case (with enough wire to reach cabin). (14 Ga) IIRC, one power wire supplies controller which in turn supplies the pitot tube itself.

In talking with Steinair folks during my panel build it turns out the harness has a power supply for pitot in one of the molex connectors but not a ground - so I'll run my ground wire to the grounding block but use the molex supply for my hot.

Since you have Dynon may be different (I'm using Garmin) but I'm sure if you give the guys at Steinair a call (Josh is the RV14 guru) they will give you the information you need.
Click to expand...
Can you not just ground the black to the wing? Do you have to go All the way to your grounding block?
 
[email protected] said:
Can you not just ground the black to the wing? Do you have to go All the way to your grounding block?
Click to expand...
You never "have to" take a ground all the way to the grounding block. The reason for taking grounds to the grounding block is to avoid ground loops which can cause noise in audio circuits. Bringing as many grounds as possible to a single point (establishing a uniform ground potential) avoids this risk. Grounds that carry more current through structure back to the reference ground (negative battery terminal attachment point to airframe) have the potential to produce more noise, since more current has more energy to induce noise.
 
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