This 2002 Toyota Avalon keeps draining the battery if it sits for more than a few days.
Owner is ready to put a kill switch on the battery.
He wants the problem diagnosed, and if possible repaired if it doesn't break the bank.
Let's follow the logical approach and see what the culprit is.
ASTRO AI DVOM:
https://www.amazon.com/dp/B07FDBW1PT?ref=exp_pinehollowautodiagnostics_dp_vv_d
ASTRO AI DC AMP CLAMP:
https://www.amazon.com/dp/B08MTCMWLB?ref=exp_pinehollowautodiagnostics_dp_vv_d
Enjoy!
Ivan