How to fix a parasitic draw?

Plug everything backin and then put an ammeter (or multimeter on a low amperage setting) with one lead attached to your positive battery terminal and the other attached to the battery cable you took off the terminal (series connection) and it should show the current draw that is killing your battery. That was the easy part. Now begin removing fuses until the current stops. This tells you what circuit is causing the problem. Once you know the circuit, you need to check each device on that circuit until you locate the source. Good luck.

Keep in mind with modern cars, there is always going to a higher than usual draw when the door is opened. Every time you open the door you keep one or more computer modules in an active state, it can take 10 to 20 minutes for a module to go back to "sleep". You could pull the fuse(s) for the doors then opening it wont affect your amperage reading. Of course if you're only pulling under hood fuses then the above would not be necessary. That said, pulling fuses until you eliminate the parasitic draw is only the first step in remedying your problem, you still have to actually repair the circuit itself. You seem to already know which circuit is causing the problem, but to fix it you will need to trace that circuit looking for shorts. Having a wire diagram is a big help, as is having a good meter.