I was contemplating whether I needed to get the upgraded engine wiring harness and sensors from Precision Racing Services this winter. It's something I really would rather not have to spend money to do, but also don't want to have it be a continual issue. I have had two engine wiring harness failures resulting in bad connections to the cam sensors. Each failure occurred after about one year of use (track and street). I would like to get a feel for the failure rate from others before I make a decision on spending that money. Below is the information I received from Precision Racing Services: Thank you for your inquiry and yes we do an upgraded version harness for the 302R. This is a package that we developed in conjunction with Ford Racing to address and eliminate the vibration issues and terminal / connector breakage problems with these sensors. We add military-spec grade wiring pigtails to the following sensors; (4) cam actuators, (4) cam positions, (1) crank position, and epoxy pot them at the sensor wire exit. The wiring is covered in high temp Raychem DR-25 shrink cover and terminated with Deutsch DTM series connectors. We also change out the factory connectors for these sensors on the engine harness for the Deutsch connector. All connectors receive military-spec gold plated terminals. We would need: - (4) Cam actuators - (4) Cam position sensors (2 gray / 2 black) - Crank position sensor - Engine Harness On the race versions we also eliminate several connections that are not required. Street car versions retain all the connections. Individual components are priced as follows: - Single sensors are $85 each - Harness modification is $400 - Package price for a full set (9 sensors / 1 harness) is $1000 We do not currently have any premade setups on hand. Our current turnaround time is about 1 week.