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I noticed that when I let me truck sit for more than a 4 days, my batteries are dead. So I recharged that and found I have a draw of about 250mA being drawn off the batteries. I started pulling fuses and found that it is coming out of Fuse 110 which is a 50A fuse for the ignition switch. Where would be the best place to start for this? Is it possible that the key switch has a short in it?
A direct short would blow the fuse, so there has to be a draw in the breakout circuits past the 50a fuse. I don't have the '04 diagrams, but I'd check through the other fuses for having power through them.
Near as I can tell, fuse 110 feeds fuse #25 & 26 when in the run position only.
If you pull #25 and/or 26 and the load drops, I would assume that your ignition switch is shorting out.
So went and did more testing, I pull Fuses 25, 26, 27, 35, and 41 but the draw was still there. I looked at a schematic some more and tried all the other fuses in the fuse box, but none of them stopped the power draw. Does that mean that maybe the key switch is bad?
It has an aftermarket radio and back up camera, but I would think that if it was the radio then pulling the radio fuses would have stopped the power draw.
