https://www.realoem.com/bmw/enUS/sho...39#12427549393

https://www.e90post.com/forums/showthread.php?t=1415088

https://blog.fcpeuro.com/bmw-ground-...ry-replacement

https://www.google.com/search?q=e90+...0xQ7lOVNkA3dM:

Don't buy another OEM version...just go to the parts store and get a ground cable like this...should be like ~$5
https://www.amazon.com/Camco-47443-4...nd+cable&psc=1