Description Reviews Mini Cooper Light Plug Pig Tail. Here is everything you need to repair the wire harness for most of the small light fixtures on the MINI (as well as others). What happens is you end up breaking a light for what ever reason, water then gets inside that light and blows the bulb. Since the bulb no loner works, it can not get hot to evaporate any moisture inside the housing and it collects inside and starts to corrode the terminals inside the bulb socket and the plug. When you buy a new light it comes with everything needed like bulb and socket. But you sometimes still need a new wire harness cause the water keeps corroding its way up or one of the pins of the plug are stuck inside. Here is the new factory part to seal it all back up and make things work correctly. We highly recommend soldering the new harness in place and using shrink wrap to seal it. It doesn't matter which wire goes to which side. There is just a power and a ground.