I had a drain and didn't have a volt meter so i just undid everything i did when i installed my mark Vii fan+fan controller. I got a hold of a volt meter and after everything was finished i did a test. With the alarm disarmed and door closed (no lights on) i get a .04 showing on the volt meter With the door open (with dome light on from door open) i get .5 Is the 0.4 something i should be concerned about or is that normal? Should it show "0" ???