From my CX5 (2015 october) with led headlights, the DLR on the left side doesn't work. I've heard the whole headlight unit needs to be replaced. Replacement by a Mazda dealer is very expensive. On ebay I found some used units. Is it possible to replace them by yourself? Are there any workarounds? On youtube I found some videos how to remove the bumper for getting at the headlight unit. But I cannot find anything about the wiring.