Disable key-in buzzer, but keep lights-on buzzer? '70 Charger

[Triplegreen500]

I need to dig through my FSM and the wiring harnesses, but does anyone know of a way to do this? I like the lights-on warning (key off, open door to get out, and the buzzer goes off as a reminder - helpful, since my daily driver has "automatic" headlights and I'm getting lazy as a result)...but I tend to leave keys in things at home (so I don't lose them!) and would like to disable that particular buzzer. I know it's the same physical buzzer, just curious if cutting the wire to the key-in sensor would disable the lights-on one as well...I guess it would come down to whether the lights-on buzzer reads key "in", or key-switch position "off". This is for a '70 Charger with column-mount ignition switch.

 

[kiwigtx]

Without looking, I am sure there is a pair of pink or red wires on that loom up the column, and that is for the switch, which is activated by the key being inserted in the barrel. Cutting either of those will not help out here, as the circuit needs that for the headlight buzzer to activate.

 

[70sixpkrt]

The key in buzzer relay is located right next to the ash tray light. The relay is screwed thru the bottom of the frame. Just locate it and unplug the relay. I forgot if it is located to the right or left of the ash tray.

 

[Triplegreen500]

Thank you, I'll try that. Will it kill the lights-on buzzer too?

I'll give it a shot next time I'm upside-down in the interior (have to put a new horn relay in as well, and a flasher unit - horn is dead, and the flashers are superfast...). Thanks!

 

[Nacho-RT74]

On 70 the lights on buzzer and key in buzzer is the same unit. The key in buzzer works by default, and the lights on buzzer was optional just adding a diode to link both systems to the same buzzer. If you disconect the buzzer will dissable both.

To eliminate the key in buzzer and keep the lights on buzzer is enough to disconect one of the red thin wires of the ignition switch harness. Since 71 these wires handle negative but on 70 it works with positive, so will need to remove and isolate the wire. It could be hot or not because one of them is the into the sensor and the other coming from sensor, but since you could choose the one being hot, better isolate for safety

On dash harness these wires use to become black, at least since 71. If you locate which one is allways hot ( without key inserted of course ) you could remove the red wire And terminal from the ign switch plug which connects to that black wire and won't have to worry about any isolation for it.