ATHANASE

In 1971 at least, the horn relay was coming with a buzzer. It is not clear to me what the condition(s) is(are) supposed to be to trigger the buzzer. Mine does buzz when I open the driver's door with apparently no other condition. I feel this is somewhat helpless so I keep the wire disconnected so that it does not bugg me.
Anyone has a better explanation of the purpose of this buzzer ?

RHD '68 L89

On my 68 it is a Key warning buzzer. If you leave the key in the ignition and open the drivers door it buzzes to remind you.
:cheers:

Cajun99

:iagree: I disconnected mine cuz I CAN'T STAND THE NOISE :cuss

mrvette

Every vestige of nader engineering has proudly been removed from my car...

GENE

ATHANASE

The combination {driver door open}+{ignition key in}+{engine not running} makes sense to me.
Funny enough, my buzzer (when connected) works when the driver's (not the passenger's) door is open, whether the ignition key is in or not.

71forKen

My buzzer also works with the driver's door open, key in or not. At least it did untill I ripped the wire off! Talk about an annoying part!

RHD '68 L89

Could be the key sensor switch in the ignition is bad, ie is always seeing a key in the ignition.
:cheers:

Gage

my 72 buzzer seems to be coming from under the dash somewherem not the horn relay.

Chuck Gongloff

There is a plastic/copper brass switch in the steering column. These "switches" are different for standard columns and tilt/tele columns. If the switch breaks, the copper/brass "legs" make constant contact = buzz.

These switches are designed only to make contact with the key fully in the ignition cylinder. With the key out or even partially out, the switch won't make contact= NO buzz.

SO...the cure to your problem is to tear into your column and replace the switch. The "Bubba" fix is to cut the wire. Chuck

ATHANASE

Thank you Chuck. This is quite an clear explanation. I will look into this contact plate.