Videos describing the modifications I've made to my FlySky FS-T6 transmitter:
Added three position switches in place of the two position ones, using the potentiometer connections. Also added a LiPo connector to the battery bay to use a 3S transmitter battery instead of AA's.
Three position switches used:
http://www.amazon.com/gp/product/B00FHO16VQ/ref=oh_aui_detailpage_o03_s00?ie=UTF8
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