I recently ( about 3 months ago) finished rebuilding and engine for my winter beater, jeep cherokee if it helps.
Now in the last few weeks I've been having a problem with one of the electrical systems drawing power over night and killing my battery.

The battery I have is less than two weeks old because I originally thought that my battery had froze during an extremely cold spell here.

I basically need a way to test the entire vehicle for power draw.
I have heard that it is possible to test for power draw but I don't know what the procedure is.

Any Ideas?

Jeff

 

Well if you have a fuse box with a bunch of fuses for different things you can do this.

Disconnect the negative cable from the battery, connect an ampere-meter in series with the battery..between the battery and the cable that is...and then you watch the readings on the ampere-meter and you'll see how many ampere/hour it draws...then you start pulling fuses and at the same time keeping an eye on the ampere-meter..and when the reading goes down you'll know which fuse you took away and which part of the system that draws power...

/just my .02

 

Hook a volt meter to bat to find how much the draw is. While looking at meter pull every fuse 1 at a time. When you pull the fuse that brings the draw to 0 you have found where the problem is. Hope that helps

 

Now those are good Ideas.
I just have to figure out if my Multimeter will do that.

Thanks

 

Your meter will usually have a different socket to plug one of the leads into for measuring amps. Make sure you do this.
Note that there is a very small amount of drain present for the pcm, radio, keyless entry... (it will be in the milliamp range, though).

You can also use a bulb in series with one of the battery cables, but it is not as precise as the meter. The bulb will glow brighter when the drain is present (because there is more current flowing).