Power "leaking" to my blower, fuel gauge, nav lights and bilge.

[mdolomount]

I'm getting power (to my blower, fuel gauge, nav lights and bilge) when the key is out and lanyard is off. I guess I could just disconnect the battery after every use, but that becomes a pain in the neck! Plus, I'd like to source the problem and fit it properly.

Any suggestions as to why this might be happening?