Bummer.
Could they simply reprogram the wiper section of the PJB? (That seems impossible, but what do I know?) If they have to reporgram the PJB to 2006 specs then what else would that screw up? Sounds like a bad idea, and would likely void the warranty.
What about something like
smart-screen/? It's an add on module designed for older cars with no intermittant at all. You wire it in to the existing wiper controls. Then you use the single wipe feature or turn them on and off quick to set the interval like this.
Wipe
-wait desired interval-
Wipe
Smart Screen then 'learns' the interval and repeats it until you use the wipers again. You cange the interval by repeating the process. To stop you jsut wipe once. After 30 seconds, the Smart Screen stops looking for an interval.
I tried to inegrate this on my Odyssey's rear wiper about 4 years ago with no luck, but I think it was my installation rather than the Smart Screen. I contacted Smart Screen at the time and they were confident that would work, for what that's worth. It's a cool idea, I'd like to see it work.
Their web page hasn't been updated in 4 years, they may not even be around anymore.
Seems like a long shot, what do you think?