If you ever get a car where you can't find the parasitic draw ,then get this. https://www.amazon.com/gp/product/B0030A10V0/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
ACDelco 4SD35X - GM Original Equipment Battery Cable
https://www.ebay.com/itm/ACDelco-4SD35X-GM-Original-Equipment-Battery-Cable/232627369140?epid=1011118677&hash=item3629abf4b4:g:NNgAAOSw~3paV4pX&vxp=mtr
Buick Grand National Positive Battery Cable...