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Ed de Chazal wrote: "Seems to be a little corrosion at the
terminal interfaces. These microswitches are all exposed
and not waterproof and this kind of false indication is not what one
needs.  Has anyone else experienced this and have recommendations to
prevent?"

It only took some flying from wet runways to sometimes get a
permanent green light, regardless of gear position, due to internal
leakage in the microswitches. I replaced them with IP67 watertight
switches from Burgess, model V3SY1. These come with permanently
attached wires that you can solder and shrink-wrap to get a weatherproof
connection. For other less exposed connections you can protect the
contact surfaces with electrical contact grease.

Sven Jerlhagen
LNC2, SE-XOP

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