And here's the wiring, it is so simple (compared to every other PFM install I've done - Supra, MR2 & WRX).
Remove 2 pins for mirror heating elements from the harness side of the mirror connector (it's hard to see from the picture, but it will be the wider pin and the pin next to it - when you look at the connector you'll know exactly which two I'm talking about) and replace with 2 pins from JDM harness pigtails (brown w/ red tracer and brown w/ black tracer):
I left my 2 heater element wires shrink wrapped and taped up incase I ever revert to USDM mirrors.
Next is to take the two brown wires/pins from the JDM mirror control connector. The two locations you take them from on the JDM connector are open on USDM harness connector, so simply drop them in there:
From here you simply run 2 ~12" wires to the drivers side mirror, and 2 wires across under the dash and into the passenger door for the mirror over there. It is the same process for that mirror as the drivers side (remove the 2 heater pins, etc. etc.).
I'm out of wire otherwise I would have finished the passenger mirror tonight. When I finish it tomorrow, I'll take a couple pics of how to pull the pins out of the connectors (it's really easy once you see it done once).
In case anyone is wondering, with the full JDM mirror and mount on the driver side, the visibilty is kinda sucky, you need to lean forward to get full view of the drivers side area (I had to do the same thing in my Supra with the PFM's...you get used to it and tend to just look over your shoulder more). I suspect the pass side will probably be fine.