I’ve done a fair amount of electrical work in my Jeeps, but I’ve never tapped a fuse. This is a basic question that will make you wonder if I’ve done anything at all.
In the main fuse box under the hood, every fuse currently gets power, with the ignition off. Is that right?
When I use a volt meter to test each fuse, every one registers current. I figured (for instance) the fuel-pump fuse would only get power when the engine is running. Am I just completely misunderstanding how this is supposed to work?
Inside the Jeep, the ignition wire that triggers the radio only comes on when the ignition is on. So that’s working as I expected.
In case any background is necessary, I’m using a relay to trigger power only when the ignition is on. But the relay is always on, because the signal from my fuse tap is always on.
In the main fuse box under the hood, every fuse currently gets power, with the ignition off. Is that right?
When I use a volt meter to test each fuse, every one registers current. I figured (for instance) the fuel-pump fuse would only get power when the engine is running. Am I just completely misunderstanding how this is supposed to work?
Inside the Jeep, the ignition wire that triggers the radio only comes on when the ignition is on. So that’s working as I expected.
In case any background is necessary, I’m using a relay to trigger power only when the ignition is on. But the relay is always on, because the signal from my fuse tap is always on.