Easiest way would be to unplug one motor at the controller, have someone watch and listen at the slide, operate the switch for a second or two and identify the working motor that way.
Don’t let the slide move very far and stop as soon as you can tell which is being powered.
Then reconnect at the controller, bring the slide back in, remember to hold the switch for around five seconds so that it can all resync.
Job done.
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Kev
2015 Thor Windsport 34F = empty pockets
2010 Kia Soul
REME veteran
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