This is a good idea considering some switches have no protection at all and people try to tape them around to keep them from shorting out. But the red caps don't stay. A little overhaul of the design wouldn't hurt. In addition, if you have large ferrules, the red part will be completely crushed and deformed as the wires are screwed in. I managed to secure the lid by wrapping it with a zip tie. Ugly, but at least it protects against grounding. Used to winch an ATV.
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