Wire cutters ?
"Just out of curiosity, is there a way to disable the buzzer for situations where you want to leave your side lights on? Tin tops will only trigger the buzzer when the door is open..."
If I understand the circuit correctly you could achieve that by placing the sensing wire (red) on the feed to the full beam or the feed to the dipped beam or for either on the feed from the main light switch to the full beam/dip switch.
Ah, but I was thinking that most of the time you would want the buzzer to sound if only the sidelights were left on
Club IT Lead, former Seven and 21 owner
You could add a switchable defeat function with an isolating switch in the buzzer circuit regardless of where you put the sensing connection.
And then another warning buzzer for if the defeat function is left on by mistake... ? : - )
What if the switch that cuts the feed to the buzzer latched in the 'off' position when pressed, and reset to 'on' when the ignition is next activated... ?