I installed this on my 2001 Dodge Ram 2500, everything went smoothly until the wiring was completed. to an APES or TPS that ended in a vacuum solenoid had to pull it back out and run it with the wire that goes to the temp sensor, then in my truck the brown wires were too short and had to add about 12 inches to those that were routed With the factory connectors mentioned in the instructions, the real problem was the connector on the vacuum solenoid, it was crimped onto the insulation so it didn't work. Thank goodness I've found that the system is now working as it should