Do you have power door locks? Honda has often put the control module
for the power door locks inside the driver's door, and that module has
relays in it. Don't know what would make it operate with the head
lights, but it is the only relay I can think of inside the door.

Turning off and on big loads like the head lights can cause popping
noises in the stereo (someone in the VW group experienced this even with
the stereo off) but if the sound came from the speaker I'm sure you
would have localized it to the speaker.

Elan7e Owner wrote:
>
> Hi all,
>
> I discovered yesterday while trouble shooting a short in my car (91' civic
> hatchback) that when I turned on the light switch, it made a clicking sound
> that was coming from somwhere inside the driver's side door! I swear! Its in
> the door, what could it be?? Is it a relay ? but in the DOOR? what the hell
> is happening!
> Is my car haunted?
> akn
>
> ps. recently got my seatbelts changed under warranty. relevant?