Hi All, This is my first posting on the message board. I own a 1977 300D I have come across a weird problem where my battery has been slowly dying on me. I was told that it most likely is an electrical short, I have been going through all my electrical circuits in my car testing out to see if any of them draw power with my multi-meter. So far the only thing drawing power is my aftermarket Clarion DB345MP radio. My meter only reads up to 200mA and it reads overload whenever I have the radio hooked into the cars circuit. The car is off when I test and I put the multi meter between the cars ground cable and the negative terminal of the battery.
To prevent my cars battery from draining out I have been disconnecting the positive terminal of my battery up till today. Its an extremely slow drain, autozone says the battery is fine but when I leave the car overnight it will not crank at all.
Any suggestions? I am wondering how much power should my radio be drawing while the car is off, it does this to keep all the settings and the clock on the same time. The manual doesnt give any specifications for how much power this unit should draw while off.
Thanks!
-James