Electronic help please.  I have a 1979 Mini, simple wiring, no MCU etc.  I need to add a BUZZER to the indicator circuit.  Currently when a direction is chosen, the dashboard indicator is energised by the +12 volt supply from that circuit with the earth return via the lamps of the opposite circuit.  I assume this works as the indicator lamp is very low wattage compared to the 2 x 18watt bulbs and a 5watt repeater bulb.

The flasher unit is a simple 2 terminal unit (Made complicated as the replacement I use requires an earth [not shown] because the internal gubbins is some sort of electronic thing).  It does not have a terminal for a repeater lamp.

I need to add a buzzer to the circuit which happens to be a polarised device.  Can I simply add a couple of back to back diodes to give me a positive feed to the buzzer irrespective of the chosen direction.

I can’t add it to the flasher unit as there is about a constant 6.5 volt on the delivery side of the unit and the buzzer sounds all the time !.

Bob