Charlestonbraces

6 weeks ago I bought a 2002 Mustang. The previous owner said it needs to be started every few days to prevent the battery from dying. So I bought it knowing I would be hunting down a parasitic draw somewhere, or so I thought.

To prevent the battery from being depleted, I bought one of those terminal disconnectors and placed it on the negative terminal. Even with that I would still start it every two days. Well, we went out of town for 10 days, with the disconnector on the negative terminal in the correct position (disconnected) and the battery was completely dead, as in the voltmeter shows zero volts.

With the key out of then ignition and door closed, I was using the continuity function of The multimeter and testing various things. With the negative terminal of the battery completely disconnected (I mean even the disconnector was taken off of it), I put the multimeter across the positive connector and the chassis and it showed continuity (.000-.001).

so, if I am interpreting the situation correctly, somewhere there is a connection between the battery and the chassis, a “short-circuit” if you will. But, this would have to be different than a parasitic draw, correct?

or maybe I am barking up the wrong tree? Before I shell out 150 bucks for a new battery, I want to make sure I have at least an idea of where this may go.