Rotax 912 tac wiring

[sdemeyer]

Having trouble figuring out how to hook up tac. Out of motor I have 1 white with red stripe and 1 white with green stripe tac leads. The rotax tac has three pins in back labeled 1, 2, 3 .

Does anyone know what pin goes to what?

Thanks,
Scott

[hansedj]

Found this on the Roan website. I still could not get mine to work. I bought a new UMA tach for the rotax and it works great. (Note)My rotax tach was used.

[Dorsal]

Scott,
You may note in the ROAN schematic that there is no reference to wire colors, I believe this is because it does not matter. I am using a Dynon system and it states you can ground either wire and use the other for signal (the pickup coil is floating so it has no ground reference).

[sdemeyer]

Thanks for finding this. I looked all over on the ROAN website for a document like this. Makes sense that color does not matter as it's AC voltage.

Scott