Tony

Conductivity is a strange thing. I remember my old foreman telling tales of tricks played on mechanics, like drawing a pencil mark down the side of a rotor arm. It's nearly invisible but enough to give the HT an easier route to ground.

An interesting experiment I use to demonstrate these subtle properties is to wire up a workshop lead lamp (12 volt) & with the feed wire cut & wires exposed & dipped into a glass of tap water (so that the fluid is the only elecrical path). The lamp fails to illuminate. Just one teaspoon of salt added is enough to alter the conductivity of the water enough to pass sufficient current to light the bulb.

What’s the relevance I hear you cry (NOT)……… All that moisture, that is often thrown up during winter months has a generous quantity of salt suspended within it. Once settled upon the various electrical systems, it can expose weaknesses that otherwise would go unnoticed.

slightly off topic, but hey hoe!

Cheers all

Dave (Hill)