I saw this method on YouTube by 'this old tony' (great channel) locating bad electrical components within circuit boards.

In essence you use a thermal imaging camera to identify changes in heat source, however small.

Perhaps an intermittent drain (short) would have a temp signal at point of contact or along the wire, has anyone tried this method on cars?

https://www.flir.co.uk/

this old tony, utterly buttery brilliant!

https://www.youtube.com/watch?v=9i4uEbYzuYg&t=640s

__________________
David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)