I have a 2012 Ram 1500 Sport with a battery draw on 2 fuses, the fuses belong to the radio/amp and the climate control system. My question is how can you have a draw on 2 different fuses without there being a common draw somewhere. When I remove one fuse at a time the amperage drops by half ( meter reads 2.6 amp draw ) when I remove both the draw is down to .50 of a amp. Color me confused....

 

In order to measure current draw on the truck, open the hood and disconnect the light. Disconnect the + cable and hook up your ampmeter in series, monitor the draw. Close all doors and turn everything off and wait a few minutes for the computer to go to sleep. You may have to wait longer if the radio is set to stay on for a while (check your settings). When everything is asleep, you should see no more than 30 milliamps.

What you are describing of 500 milliamps even with the 2 fuses pulled, tells me that you are probably not waiting long enough. 0.5 Amps is a lot of current, thats basically a dome light equivalent.