GRT Horizon -SL40 freq. change
I have a GRT Horizon 1 single screen EFIS with internal GPS and an SL-40 which has flip/flop freq. I need to wire the RS232 serial out from the radio into the EFIS and then down to the Infinity stick grip coolie switch for toggling the freq. change. Can anyone help an electrically challenged builder?
I don't know which EFIS pin to route it to or how to connect it to the stick grip.
Thanks,
Ron Burnett
RV-6A finishing
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Ron Burnett N524RB
RV-6A Lycoming O360 dual EFII
M71-Greensfield, MO near St. Louis
Exempt but dues gladly paid January 2020
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