hondaguru said:
My bigest question is since my D1 is already installed, is the harness for the D1 and Z1 the same?
I doubt everything is the same, but not having one I can't tell you for absolute, you might get away with just the power/speaker connections.
hondaguru said:
It would be nice to just swap out units.
That would be an easy install. I know some manufacturers do keep the connectors the same over time, you might get lucky.
hondaguru said:
If it will work I have the D1 wired so that it thinks the parking brake is always set. Will this effect the Z1?
Yes, you will have problems if you try to do something you shouldn't while driving. If you put in a DVD while parked, and start watching it. It will work cause the parking brake is grounded (thinks your parking brake is on). But when you start moving the GPS and gyro sensors will notice you are moving and it will kill the video and then pop up a warning about your parking brake not being connected correctly. Then every time you power on the unit, it will pop this warning up till you reset the unit. It will come back again if you "piss it off again" (by doing something you shoudln't while moving).