I'm hoping for some input from G3Expert here to my two questions at the end.
I'm helping a friend with his G3X. The Tachometer suddenly started reading much higher than the actual as well as reading erratically, pegging out and a red X appearing. He was using a tach vent magnetic pickup sensor which had been working fine. Looked at the option of using the 400K resistor to the p-lead but a caution note indicated the GEA-24 must be Mod level 2 and his unit is Mod level 1.
![P-lead Caution.png P-lead Caution.png](https://vansairforce.net/data/attachments/36/36953-d495cd29df4e7e334104f193936c5af9.jpg)
Looking at this diagram it suggests that maybe this doesn't apply when connecting to the ignition switch end. One toggle switch in this case, the other side is electronic ignition.
![P-Lead Connection.png P-Lead Connection.png](https://vansairforce.net/data/attachments/36/36950-c073a478ba6ab15d3cceaa9c11080308.jpg)
A T1A9-1 sensor for his slick mag is on order hoping that will fix the problem but looking at other options.
I'm helping a friend with his G3X. The Tachometer suddenly started reading much higher than the actual as well as reading erratically, pegging out and a red X appearing. He was using a tach vent magnetic pickup sensor which had been working fine. Looked at the option of using the 400K resistor to the p-lead but a caution note indicated the GEA-24 must be Mod level 2 and his unit is Mod level 1.
![P-lead Caution.png P-lead Caution.png](https://vansairforce.net/data/attachments/36/36953-d495cd29df4e7e334104f193936c5af9.jpg)
Looking at this diagram it suggests that maybe this doesn't apply when connecting to the ignition switch end. One toggle switch in this case, the other side is electronic ignition.
![P-Lead Connection.png P-Lead Connection.png](https://vansairforce.net/data/attachments/36/36950-c073a478ba6ab15d3cceaa9c11080308.jpg)
- Is it possible Mod level 2 does not apply if connected to the ignition switch side?
- What is the path for getting Mod level 2?
A T1A9-1 sensor for his slick mag is on order hoping that will fix the problem but looking at other options.