Hello, Not been on for while, I've got a 2000 V40 T4 and sidelights don't work, traced it down to CEM thats faulty and not powering lights up even tho its clicking, Now am not paying out for a new CEM and i just wondered if they were interchangable with others, if i got one from a scrappers from another car, I know they do a right lot on these cars as it starts and runs etc with it disconnected etc,