Have 2014 625i, want to install light kit BM24016 using wiring harness 24089. Instruction for harness states that wiring harness is behind battery when it looks like it is under tray below hood. Not sure how to route harness. If wiring harness under hood then you could use switch on dash with different harness , correct? Need help. John Deere says right harness for this Gator.