My flying plane has full lighting and with the navigation lights (non-led) and taxi light on, I run out of voltage to operate the radio (Terra) at low RPM.
I'm considering an EFIS and do not want to have issues...
Av8r3400 Kitfox Model IV
The Mangy Fox
912UL 105hp Zipper YouTube Videos
I do not have the round cowl; but, here are some photos of how the aux alternator fits under the flat top cowl. The alternator fits in tighter to the engine than I thought it would. The closest part to the top cowl was the end of output lead stud. The way the alternator is built - it appears that the rear half of the housing could rotate 90 degrees either way. Fit was no problem under the flat top cowl.