training academy for Land Rover
Good ole LR Training Academy, it may have changed now but it went like this:
Question : "How do I test that component ?"
1. You try a known Good from another vehicle in the workshop
2. That Component wont fail, but to be sure "You try a known Good from another vehicle in the workshop
Moving on, an answer to you question
An article here by Steve Smithhttps://www.picoauto.com/library/traini ... itic-drain
Another here topic12661.html
I have followed all 3 of the above and used the various theories / methods. Using the Resistor in Series is by far the most accurate method to measure the current flowing, Especially over long periods of time. Far better than the Amp Clamp, A DMM in series is good as long as you are stood in front of it and don't blink a lot.
If you are any thing like me then you may end up buying some resistors and a thermal imaging camera - well worth the money.