This 10 Amp fuse doesn’t directly power the interior lights; yes it protects the circuit but this fuse’s power wire, feeds the Body Control Module (BCM). From there the BCM controls what lights are allowed to be turned on or off; depending on the request sent to the BCM.
This orange wire from the INT Lamp fuse goes to the BCM connector C1, terminal G.
You’ll also find a dark blue wire in connector C1 terminal E this is the wire that sends power out to all the different light circuits; when the BCM sees fit to turn them on.
The BCM also controls the ground side of portions of this circuit via a gray/black wire, connector C1 terminal F.
The door switches that Tom is talking about in this case cannot be the problem because they are only a ground input signals to the BCM; telling the BCM that a door has been opened.
Don’t become confused or only go by wire colors because the right front and both rear door input switches also have dark blue wires but they go to connector C3 of the BCM and like I said there isn’t power on these wires they are a ground signal.
Now that I’ve got you completely confused; I’ll say that no; it’s not just a simple dome light wiring circuit anymore and you may find yourself pulling out your hair looking for an intermittent short that is blowing this fuse.
The one place where you may get lucky and stumble across the problem is in the trunk. I’ve seen where people have knocked the light assembly or the wiring harness out of their retainers and now are being pinched by something like the trunk lid hinge?
Dan.
Canadian "EH"
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