Mighty Burger Posted December 2, 2019 Report Share Posted December 2, 2019 Recently I've been having some issues with starting the truck. It's gotten to the point where this morning I wasn't able to start it up at all. The battery died. After quickly checking I noticed there is a significant parasitic draw of 60mA. It's only become a major problem now because of how cold it's gotten. Thankfully electronics is the one area I'm good at and I was able to nail the problem down to the aftermarket radio someone did a terrible job installing. Think stripping wires, twisting them in a pigtail (no crimp, no solder) and covering the mess in packing tape. I'm going to have to clean up this mess. Without the radio the parasitic draw drops to 3mA. This radio (as well as most other radios out there) have two different positive wires going into them: one that is permanently connected to battery power, and one that is only supposed to be powered on when the key is in the ignition and set to ACC or ON. Well, whoever installed the radio hooked both of the wires to the permanent power source, meaning it stays on even when the key is taken out. I need to find somewhere to connect the radio's ACC wire to so it doesn't draw a bunch of current while the truck's off. Where can I go to tap into this ACC power source that turns on only when the key is in the ignition? Quote Link to comment
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