This is a overall picture of 2010 Nissan Maxima dash. The side panel pops off with no bolts. The bottom panel has one screw holding it behind the fuse cover. Remove the screw and it pops off as well.
[ All connections were military spliced with no solder, blue 3M Tape, just in case I need to remove this alarm later]
BCM SOLUTION (Alternative to removing BCM)- I did not remove the BCM due to factory tamper proof security screws, very tight space, and fear of damaging the BCM. The BCM is extremely difficult to remove. I followed the wires from the BCM instead
12v constant - I tapped into the 12v constant (WHITE/ Black wire) at harness coming from the BCM module to the fuse box, rather than at the BCM itself. (isolated with multimeter - military spliced)
Door Input - The green wire below coming out of the kick panel, is connected to the door pin underneath the kick panel, rather than at the BCM itself. I isolated this by testing for continuity from the door pin switch to the wire also military spliced.
Ground - Connected at the bracket under the steering column. Tested with a multimeter and connected with yellow screw type connector.
Siren - Mounted in front of battery at the front end. Wire was run through the rubber seal at the steering column. The wire harness was extremely difficult to get to.
Python Remote START - First start, I received errors and clicking sounds only. All 12v Constant fused wires needed to be connected, Accessory, ignition Inputs, etc. Second Start attempt, I got a "Manual transmission Error" and then a "Hood Open error". This was resolved by programming the python using the Python Remote, switching factory default from "Manual Trans" to "Automatic Transmission". I got a "hood open error" after a few starts. The factory default for the Hood Pin is 'normally open'. I kept getting an "hood open error" until reset it to "normally close" and then back to "normally open" again using the remote for programming. REMOTE START NOW WORKS FINE.... vrooom... *LOL*
Erick