I'm preparing to install a GRT EIS 4000 for my Lycoming O-360 (slick mags). For the tach, the instructions suggest installing a toggle switch to allow you to select a mag for a tach reading.
Is this there a better way to do this without a toggle switch?
Doug
RV-7
Firewall Forward
Is this there a better way to do this without a toggle switch?
Doug
RV-7
Firewall Forward
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