Lifetime Premium Member
Join Date: Apr 2010
Location: West Palm Florida
Re: Tracking battery drain
Get a 12V test light. Disconnect either battery cable and run the test light in series. If that test light lights up, it will show you there is a draw. Go to the fuse box and pull he interior fuse. Does the light stay lit? That circuit is not the issue. You can then pull each fuse one by one and when the light goes out, you know at least which circuit is killing the battery.
If the light stays lit with all the fuses out, it is time to unplug the alternator, and any aftermarket accesories. 90% of draws I find are either interior light or radio circuit.
Couple of junkers and a few clunkers.