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Wow that was a comprehensive answer. Thanks Arno. Not sure yet what I will do as I am in the UK for another couple of weeks before gong back to the boat.
On 28 Sep 2019, at 19:43, Arno Luijten <arno.luijten@...
Yes, the grey ones are the thermal sensor. The idea is to put it in the 24 Volt feed line of the switch that operates the furler so when it becomes too hot the furler will cease operation untill it has cooled down. The problem will be that the feed line of the switch is in the cockpit and does not go anywhere near the Boxtron controller. Only the two wires "behind" the switch are led to the Boxtron. The simplest way to way around this is is to assume that overheating will most likely take place during furling the sail (as opposed to unfurling). In that case you can put the sensor in series with the wire from the cockpit switch that makes the Boxtron activate the counter-clockwise (furling) motion.
Alternative you can run two additional cables between the switch and the Boxtron but that will be a pig to put in.
My solution when I was faced wit this problem was to include an interface box to handle the issue (see: https://amelyachtowners.groups.io/g/main/message/44275?p=,,,20,0,0,0::relevance,,bamar,20,2,0,29771214,d=5&d=5
You could also ignore the cable and simply not connect it and make sure you do not overstress the furlers.