My 2005 had an alarm system added at one time. Then it was taken off. But they didn't return the wiring to original. Turn signals and odometer don't work. So something is haywire with connectors or wiring someplace. It would be so much easier to park another f4 next to compare so I can figure out the problem. Wiring schematics are difficult to visualize, so if someone is willing to help out, I'd sure appreciate it.