Tip: Instead of soldering I use splicing connectors with levers for testing stuff like this out. For example: https://www.wago.com/de-en/c/installation-termina

Tip: Instead of soldering I use splicing connectors with levers for testing stuff like this out. For example: https://www.wago.com/de-en/c/installation-terminal-blocks-and-connectors https://www.wago.com/de-en/c/installation-terminal-blocks-an...