I bought a used Mazda 3 year 12/2005 from Italy. This car has a diesel engine 1.6 Turbo same as Ford/PSA. I have a loose three pin cable that don't know where does it belong. I've checked with 2 different mechanics but they don't know either. Can someone help me to find the function of this cable? It ends up at fuse box but cant find where exactly because its wrapped with some other cables.

• top-right -- battery cover
• bottom-left -- engine cover
• bottom-right-- fuse box [not present on the picture]