vc commodore
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You are. A multimeter in current mode can catch people out. I’ve lost count of how many times I’ve had to replace a fuse in a multimeter because someone left the leads in the current terminal, or they don’t fully understand how to use a multimeter in current mode.
Clamp-ons are pretty tolerant of abuse (current overload) and don’t need the circuit ‘opened up’ to do the measurement. Also, a lot of cars (including the VE and VF) progressively shutdown over about a 15~20 minutes. So, opening the battery circuit resets that time, so the current goes back to a higher level than the fully shutdown mode. But in any case, chasing a parasitic current draw over 1A is pretty easy.
$120 for a clamp meter is pretty low cost compared to a visit to an auto electrician.
I have provided a youtube video which explains how to do the test from set up of the multimetre to finding the problem
I'd suggest you do the same so people can make their own decision which is the method they prefer....
Oh and it costs about $23 for an elcheapo multimetre from supercheap, which is suitable to do the job
https://www.supercheapauto.com.au/p/sca-sca-multimeter-digital---automotive/4405.html