Hello, I have a 2004 g35 that runs fine but will not accelerate. I replaced the throttle body and the accelerator pedal position sensor. I took the car up to Infiniti and they believe my wiring harness needs to be replaced. They quoted me for the body harness and the engine harness and the parts came out to around 4500. The wiring around the engine has been cut into, so it makes sense that the engine harness could be the issue, but I couldn't understand why they wanted to replace the body wiring harness also. Can the body wiring harness prevent the car from accelerating or are they just trying to make more money off me? Also, how much should I expect to pay to replace the engine harness? Thanks