I agree with what Gary said,anyone who wants to maintain a warrany on the engine/pump/drivetrain should not be installing major fueling boxes that attach to the pump wire. As stated the marks on the wire are dead giveaway that you've heavily bombed the motor. I would figure that truck to be out of warranty now,even if the dealer overlooked the marks on the wire,the pump/engine is unwarrantable ,if warranty fails to pay the bill,you are responsible. I thought good and hard about this before i tapped my pump wire. I figure if we run a pump lubricant,and monitor the fuel pressure via a guage ,we run a much better chance of catching a small problem before it costs us a VP44. Tell your brother to get some guages so he knows when his lift pump is failing,before it eats the Vp44 pump.