Re: Huge Voltage Drain Problem - Ideas?
A very nice clamp-on ammeter for very little $$$ is the Mastech MS2108 (NOT the MS2108A).
The 2108 is AC/DC, 600A capacity, in-rush current, etc., etc. I have two of them and often find myself reaching for them instead of my $350 Fluke 337.
Find 'em on eBay from US dealers in CA or NY/NJ for about $67.