So I have a very weird problem, my car runs fine but the instruments(speedometer and odometer) don't report anything, and the headlights don't turn on, but the high beams do if I hold it on. Now the weird thing is that if I unplug a wire harness right below the fuse box the head lights work properly but none of the instruments turn on. I have a 2004 cooper s btw.
Has anyone heard of this problem?