I found a few issues with the Mazda install manual (my car is 2010 mazda3):
1. Main harness white wire incorrectly stated to be connected to parking lights +. Instead this wire needs to go to second accessory, otherwise the heater will not work when remote started.
2. Lock and unlock wires need to be manually hooked up
3. Horn needs to be hooked up
4. Hood pin needs to be installed and hooked up
5. A separate RF kit needs to be purchased and an antenna needs to be hooked up to the main unit.
I am just wondering what's the point of having vehicle-specific installation manuals if they have so many errors in them? (I added this question so that others can see what they need to do to install on Mazdas)