Please can anyone help as My e34 520i 1988 did not come standard with lights on buzzer and I keep forgetting to switch my lights off. I bought a little 12v buzzer with 2 wires but not sure of the best way of fitting it. Let me point out I am a real beginner (mong) when it comes to electrics so please talk in real la-mans terms. I have googled all sorts but can not find anything for a BMW e34 on this subject. Any help much appreciated

Many thanks