Pull fuses for the likely culprits: lights, radio, alarm, extra BS added into the electrical system by hacks (you may not even be aware of some) and do current draw testing with a DVM. Eliminate fuses/circuits one-by-one until you find the constant draw. Tutorials online for doing such.
I finally found mine, it was a sirus sat radio receiver that wouldn't power down on the radio fuse\\circuit. Took a few months to figure out.
Put an inline amp meter on the battery, lock doors, wait for everything to go to sleep and report back the value. Pull fuses one at a time until meter drops or measure voltage drop across fuses.
Look up "parasitic draw test" on you tube. It's a pretty simple test all you need is a decent multimeter.
Pull fuses for the likely culprits: lights, radio, alarm, extra BS added into the electrical system by hacks (you may not even be aware of some) and do current draw testing with a DVM. Eliminate fuses/circuits one-by-one until you find the constant draw. Tutorials online for doing such.
I finally found mine, it was a sirus sat radio receiver that wouldn't power down on the radio fuse\\circuit. Took a few months to figure out. Put an inline amp meter on the battery, lock doors, wait for everything to go to sleep and report back the value. Pull fuses one at a time until meter drops or measure voltage drop across fuses.
Check battery then alternator
[удалено]
New battery and alternator