A buddy of mine needs the long battery cable that runs from 1 battery to the next on his 01 cummins. I believe he said it was the positive cable. Where is the best place to pick up that part thanks.

 

You could look at local salvage yard. You can probablly purchase from a dealer. You can have one made up at local large truck service facility. You could buy 2-0 welding cable and terminals and make your own.

 

I used heavy welding cable when I replaced mine about two years ago, and it works fine. HOWEVER.... the insulation is already starting to show some cracking, and that was unexpected. I guess welding cable is expected to be replaced fairly often, though I've had the same cables on my arc welder for about 25 years now.... Maybe the under-hood environment gets to them