Can anyone describe or direct me to a schematic of how the brake lines were run on a 49 1/2 ton? Mine were non existent when I purchased my truck. I know the line comes off the back of the master cyl. and crosses over under the tranny. Where does the line to the left front wheel come from. The service manual shows some type of T connected to the master cylinder. Mine did not have this on it. Is it supposed to? Any help appreciated.