ECU has nothing to do with the alarm system or power windows.
Power Locks <--- clicky da link.
AndyS has rear actuators from a dodge minivan I think? and front power windows from a 6-series (also, a guess) a search would yield more results there.
Tips on alarm install:
* The parking light wires are separated left and right on different circuits. On my car the easiest place to tap in was at the headlight switch. You'll have to diode-isolate these 2 wires from another.
* The domelight is a negative trigger. If you're wiring up your domelight to the alarm, make sure the output to the light is negative.
* The starter wire is black with a white tracer. Instead of cutting and soldering it, just unplug it from the ignition, run one line into the alarm, and the other from the alarm back into the ignition. This will limit un-necessary solder joints.
* The brown/purple wire at the driver's door pin reads negative when either door is opened. This is the best place to tap in for that signal.
This can be somewhat complicated at times, but its nothing like building an ECU or anything. Easiest way to do it is to make mock-ups of everything before you install to make sure the final product is as clean as possible.
Push-button starters have been covered in the past, another search could help there too. I believe there was a recent post regarding this in the project section, pointing to this link:
http://www.ignitedperformance.com/_________________
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