GRT 4000 EIS

[rv6aviator]

No rpm indication from my GRT 4000 EIS. Settings for RPM are all set and correct but no rpm showing at all. Running 2 Slicks on Lyc 4. I suspect it is a wiring problem although it all appears correct. Anyone have experience ref how specifcally wires should all run and how to trouble shoot to find problem?.

 

[Taltruda]

Google EIS 4000 manual. It’s all in there. You’ll need some 27k resistors if I remember correctly, connected from the EIS to the mag switch p leads..

 

[lr172]

+1

In some cases experimentation is required on the resistor size in order to make it work.