4R100W Replacement Transmission Harness
The transmission harness is the connection between the transmission and the to the main harness that sends signals on transmission function. A faulty transmission harness can cause bucking, mis-shifting, and other transmission malfunctions. Being an exact reproduction, this 4R100W harness will restore your 1999-2004 SVT Lightning to working correctly with a hassle-free installation!
This harness also connects the O2 sensors to the main harness