How do I wire up buzzers to rear indicators?

[bizarro]

Originally Posted by CTScott

You could wire the chimes to the turn signal stalk instead of to the bulbs, that way they will receive a constant instead of pulsed feed. The black wire on the stalk connector is the left and the violet is the right. You would connect those wires to the negative lead of the buzzer and would connect the positive lead of the buzzers to a +12V source.

Ok, sounds promising - and where would those wires be accessed - in the fusebox on the LHS (i.e. to the left of the steering wheel in the US, behind the parcel shelf in the UK)?