201 – SureFly Ignition Installation

Airplane Owner Maintenance - By Dean Showalter

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2y ago 38:23

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Have you ever seen one of these? It’s a SureFly Ignition Module, or “SIM” for short:

I recently had an opportunity to install one on an E33A Bonanza, so I thought I’d do a podcast episode about it. Hopefully you’ll find this information helpful if you’re considering a SureFly, and for me, I find it helpful to document the process.

For this installation, a “Tach 2” device was also required, to convert the rotation of the SureFly to a signal that’s usable with the previously installed Horizon Instruments P-1000 tach in the airplane. Here’s what the Tach 2 looks like:

The SureFly is powered through a fuse right off the hot side of the battery contactor:

I had to gain access to the back of the ignition switch for some of the required wiring… I removed the existing P-1000 digital tach wire from the “L” terminal of the ignition switch, and attached it to the “Tach 2” unit for the SureFly. I also attached the necessary wire between the “L” terminal of the ignition switch and the “L P-lead” terminal of the Tach2 unit.

This E33A Bonanza now has a SureFly in the left mag position!

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