Tracking down a parasitic current draw can be a nightmare — proper testing is essential to finding the battery drain. This procedure (and corresponding voltage drop charts, below video) are applicable to Mini Fuses, Maxi Fuses, Standard ATC Fuses and JCase Cartridge Fuses.
Charles, aka the Humble Mechanic, goes over in detail the best way we’ve found to perform a Parasitic Current Draw Test.
Fuse Voltage Drop Conversion Charts
Convert milivolt readings into a miliamp number that represents the current flowing through a fuse.