motorcraftservice.com motorcraftservice.com Figure 13A: This section of a 2007 Ford Edge wiring diagram for the HVAC system shows that it connects to Ground No. 203. Figure 13B: This section of the 2007 Ford Edge wiring diagram for the Anti-Lock Brakes/Traction Control system shows that it shares the No. 203 ground with HVAC. However, the ground was found to be clean and tight. August 2017 7 MACS Service Reportshttp://www.motorcraftservice.com http://www.motorcraftservice.com