I have an 01 2500 that needs new front brake lines and the vendor that I have found has two options, one for rear wheel abs and the other is 4 wheel abs. Any ideas on how to determine this from looking at the truck/brake lines?

 

4 wheel abs will have a wire going to the wheel bearing On the steering knuckle

 

Great, thank you. I'll take a look tonight.

 

Some are only on one side, even though it's still considered "4wheel"

 

4 wheel abs will have this (look at pic) module under the hood. No module? Then you have rwal only.