Two Cycle analysts - One Grin Tripwire

[HillCruiser]

My dual-motor ebike has two batteries and a Cycle Analyst for each one.
I want to use the autocruise feature on the CA's for both motors so I need an ebrake signal to deactivate the autocruise.
Can I parallel the ebrake/ground of two cycle analysts to one Grin Trip-wire?

 

[amberwolf]

I can't think of any reason it wouldn't work, as long as your batteries/controllers/systems have a common ground between them for the CA's power connections. (even though they have separated current-monitoring connections for the main battery ground wire).

If you have them completely isolated, you'll have to have the tripwire (or other signal device) trigger a relay (with Normally-Open output) or optoisolator (with open-collector output). Depending on how you use the tripwire to trigger the relay/opto, you can just have the TW directly control one CA, and the relay/opto trigger the other, or you may need a DPST relay or dual opto to have the TW trigger each CA separately.