I recently installed a Z2, it works great!!! I followed the simple ass instructions - and after a 'low level' reset - actually tried several times - it doesn't seem to make any change - the unit still senses if the pking break is on or off. The hack sounds great and I'll def. be donating!! I'm assuming this overrides any other settings or sensors in the unit - but if the pking break was actually hooked up should I disconnect after applying this to make it work? This was a stock unit, brand new, no mods, so is there anything else that might cause this to fully complete the update process and st