I am having a problem with the individual lamps in the back box. In test it seems like they are one off what they should be, some are correct, but a few are off. In test it should be "dog" but the question mark is lit on the back box, then I check the next one which says "question mark" but the alarm 3 is lit? I resat the connectors, thinking maybe a diode problem but I don't see any individual diodes? Any info would be appreciated. Thanks