FWIW, those cheap HF multimeters have a 10 amp current mode and measure in milliamps, and have a replaceable fuse inside if you exceed 10A. Free with a coupon at times. I find them handy and disposable for diagnoses like this - connect between the battery and ground then plug the fuses in one at a time until the MA jumps up.
The leads on those usually fail before the meter, if/when you kill a meter save the leads for the next one.
Automotive is not critical, but if even THINKING about electric motors, DC most of all, same meter, even as a 2d or 3rd one, more better to pitch some of those leads in the dustbin, Day One and sub safer ones, actually.
It is a MINOR nuisance to prepare a split fuse or just fab a couple of workalike blade probes that can be used by "walking" substitution to measure one specific circuit at a time, minimal fumbling about as to placing the meter or holding leads.
One has to pull each fuse in any case, yah?
Putting a meter between the main lead and battery is not as "minor" a nuisance, and is seldom needed.
More to the point, it is VERY useful to be able to measure that suspect fuse or fuses, several, while still being able to start and run the motor, yah?
I have never HAD this sort of problem for very long at all. It has never been that hard to
isolate - even when much harder to actually FIX - most especially if one studies-up on the problem database for any given vehicle.
That USED TO mean hanging around the grubby old garages where the tobacco-spitting experts were to be found. Then reading columns in the dead-tree magazines.
Nowadays, those database are online and easily searched. Damned rare the motor vehicle that is a one-off, rather than same-same with millions of others just like it, so yah - the same s**t does happen over and over again, and it gets ratted-out more than once.
Find those "probables" and shortlist them from a comfortable seat, save a good deal of UNcomfortable twisting and bending under rude conditions.
REALLY rare to be "the first one, ever" with a brand-new problem. TONS of guidance out there in motor-vehicle internet-land.
PM is only incidentally related, if-even that much overlap exists.
30CW