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Wirring issues
Bulat
Posts: 3Member
Hello guys, any idea how to indentify which one is positive and negative terminal for below image? Im trying joint new hotend with new thermistor on a5.
The black wire is from a5 which i believe the thermistor cable. The white is the new termistor cable.
The red wires from from new hotend and a5. So how to joint this? Please help me
The black wire is from a5 which i believe the thermistor cable. The white is the new termistor cable.
The red wires from from new hotend and a5. So how to joint this? Please help me
Post edited by Bulat on
Comments
both the thermistor and the heater cartridge will most probably not be dependent on a specific polarity.
However, if you have a multimeter and are able to find electrical connections with it by resistance measurement or continuity test, you can verify the wires:
You can identify the right wires by measuring between the open ends of the A5 wires and the respective pins on the disconnected plug of the side connectors of the A5. The link below shows you the pinning of the 3 side connectors
https://jgaurorawiki.com/_detail/a5/a5-wiring-diagram.jpg?id=a5%3Amodifications
What is of interest for your purpose is the longest plug (14 pins):
Pins 5 and 6 are for the thermistor (even if the table says "bed sensor", but that isn't on that connector, must be the hotend sensor/thermistor)
Pins 13 and 14 are for the heater cartridge, where black and red can be assumed to be negative and positive, but since the heater wires on your new hotend show no differentiation on polarity, it can be connected either way. You can even verify with your new heater cartridge, that it's wires are electrically isolated from its body by measuring resistance/continuity between body and wires, there should be no connection. Otherwise you would need to observe polarities!
Hope this helps
Regards
Andreas
https://jgaurorawiki.com/not-heating
Regards
Andreas
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