[RAAPS]

Hello Dave,
I own a Automatic Rebuild shop so what I can tell you is this, to find correct cable go and see a Auto Electrician he will advise correct size, depending on what engine and transmission you are running voltage mean a lot, longer the distant the bigger the cable. A standard C/dore Gen 3/ Gen 4 with Auto needs approx 9.4 volt to excit Computer or transmission will go into fail safe, also engine will experience issue as well. Make sure you earth at battery and engine bay with same cable, so see electrician for whats best in cable size.