My 84 has the Headlamp on warning chime/key in ignition buzzer but it's very faint. Does this mean it's worn out or is there another problem. Looked at the 86 I have and it uses 3 separate devices to perform these functions whereas the 84 uses only one. So I don't think I can swap out between the two for a test. The 84's looks like a blue rectangular cube but part of the part number was printed sloppily and I can't read the whole number. Would like to get this working correctly.