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D120 fuel flow gauge reading erratic after 4 years of rock steady operation. I replaced the FT-60 but I still get same erratic readings. D120 EMS Pin 14 runs to the fuel flow gauge (FT-60 in this case). Pin 14 should supply 5 volts to FT-60, but I am reading a steady 4 volts coming from Pin...

Plane has been flying for 10 years. No problems. Last flight, I noticed the Amps was 0. Voltage rock steady. So I replaced my voltage regulator. Went flying, and Amps still show 0. Then I ran wires directly from the shunt on the firewall to the pin connector on the D120. Ground run, and...

I have a D120 and in cruise flight I will get a constant "Shock Cooling" alarm. CHT's are steady during cruise flight. Shock Cooling sensor is set for a 50 degree change. What is causing this?

I broke a knob off of my HS34. Can it be repaired or do I need to buy a new unit?

Can I wire my Dynon D100 and D120 straight to my headphone jack? only have one radio and no audio panel.

My Dynon D10A will not get past the blue start up screen, then the screen goes black for a second, then the blue startup screen comes on again.  The white "d" for dynon does appear on the blue screen.  It stays in this cycle until I pull the breaker.  What should I do, send it in for repair?

I have my G430W tied to my D100/HS34/AP74 autopilot system. When I am flying an RNAV approach, all the turns on the approach plate that lead into the turn onto final perform "turn anticipation." I can see the dotted anticipation turn on the 430W and the autopilot flies the anticipation...

I connected my King KR22 marker beacon (wiring diagram is attached to this post) to my D100.  The "O" and "M" are continuously visible on the screen of the D100, but the "I" is not.  If I ground the "I" circuit, the white "I" will appear on the D100 screen, but disappears again once I unground...

I want to tie my Garmin 400W to my HS34. I am failing to get the D100 HSI to show the 400W CDI. Its keeps saying waiting on GPS. So, will you confirm I have the 400W and HS34 configured properly? Below is what I plan to put in the 400W: Main AIRNC 429 Config" page In 1 ...

Can I connect a wire from my garmin 400W unit to my HS34 that will show DME (to whatever waypoint is in my 400W) on my D100? If yes, what wire from the 400W?

In GPS mode, my autopilot does very well. When I am in heading mode, it wanders around. Is there a way to change the settings for heading mode only?

Can I run a Garmin 400W, an IFLY 740 and my SL30 through the HS34? If yes, would I connect the 400W to HS34 pins 11, 13, 25, 25 and connect the IFLY to HS34 pins 10,12,22,24 and connect the SL30 to HS34 pins 15 and 2?

I have an SL30 wired to my D100 and HS34. When I shoot an approach, say an ILS or a LOC, how do I change the scale from enroute to terminal?

I have my D100 tied to an SL30. I flew the LOC BC 4 at KTXK today, and I was getting reverse sensing on my D100. I thought the HSI on the D100 would not "reverse sense". What am I missing here?

I have a D100 and an IFLy720 gps driving my autopilot.  when I get to a waypoint, and make a turn to the next waypoint, it always overshoots, and corrects back on course (see the photo).  Is there any way to correct this in the autopilot settings? Like turn anticipation....

I have had my dynon autopilot connected and flying via my IFLY720 for about 6 trouble free months.  Yesterday, after flying on the autopilot for about 30 trouble free minutes, it started flying me in 360 degree circles.  So, after about the third circle, I disengaged the AP and continued on my...

from the manual: The general rule of thumb: if your GALS (or LTRS) USED reads higher than you expect, increase the K-factor; if it reads lower than you expect, decrease the K-factor I have gone braindead. My D120 always says I have about 2 more gallons in the tank than actual. Sooooo, do I...

I am unclear as to what is required in order for the dynon servos to make my airplane descend while on an ILS or GPS approach in order to stay on altitude during an approach. Does the altitude information come from the D100 (or Skyview) and the heading come from the connected GPS box. Also...

I want to use a 50K linear pot (data sheet attached) with my pitch trim system and my D120 EMS. Do you think it will work or is there another more mainstream pot that people use?

The servo shear screw says to be set to 16 ounce inches or 1ft-lbs. Can anyone recommend a torque driver that will torque to such low settings?