do i see this wrong or does 'interlock in' on front controller connect to 'interlock out' on rear controller? [bad-boy-buggy-wiring-diagram]

Yes, and the 'interlock in' on rear controller connects to 'interlock out' on front controller. G

Reading Wiring schematic

srnet November 22, 2021, 5:51pm 4

OK so how is this related to Arduinos and what are you trying to do ?

Are you preapred to tell us what device this is supposed to be a schematic of ?

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