while my van is in bits i thought it would be sensible to install whatever wiring etc i need to make the indicators into hazard lights if necessary

can anyone tell me how to go about doing this?
i think aupickup had a solution but i couldn't follow his explanation, could just be a bad brainfog day on my part

i can see that ESM have a unit which they call a "Flasher Unit - Hazard Warning", part no SWT106A (http://shop.morrisminorspares.co.uk/pro ... f093e466c8) Is this what i need? and if so how should i wire it in?
grateful for any advice

juliet