The rear wiper on my touring has started acting strange. It used to wipe once, pause, wipe once, pause, wipe once, etc... Now it has started wiping 5.75 times, pause, 5.75 times, pause, 5.75 times, etc...

The 5.75 is approximate by the way. Some times it seems to go exactly 6 wipes. It can take many cycles to get the wiper back to home position.

Is this a symptom of the bad wire harness? I thought then it just quit working. Everything else back hatch related works perfect. Is there a relay or something that might be bad?