I'm about to upgrade to a 250 amp high-output alternator to accommodate some of the new accessories on my truck and trailer. The alternator requires a Big Three Wire kit to handle the extra current. While looking under the hood, I thought it would also be a good idea to change out all the old battery cables and also install a new Power distribution Kit so I could cleanup some of the wiring mess connected to both batteries. I spent a few hours looking at battery cable replacement kits on the web and the prices made me pucker-up my you-know-where; just the battery cable kit price ranges from approx $325-$450 while the necessary big three alternator wiring kit is another $95. I'm pretty handy so I decided I going to purchase the materials and make the cables myself. During my expedition through the Interwebs, I was able to figure out the wire lengths and wire gauge for the new alternator wiring and the approximate length and wire gauge for the new power distribution kit so I can purchase the cable and materials in bulk. With that said, I was unable to find any information on wire lengths or diagrams and schematics illustrating the correct wire length and gauge for the battery cable replacement kit for all the necessary cables. By chance, does anyone here have the relevant wiring size information so I can have the materials on hand without ripping out and measuring the old wiring harness.
Thanks for your time.

 

You should ask in the 1999-2003 7.3L sub-forum....they will be glad to help.