im rot really familiar with alpine stuff, but i will do my best:
for car info, see if you can find a "repair manual" - bentley makes one for europeans, im not really sure what a taco is.
here are the connections that will need to be connected for the system to work:
Acc (ignition, so its not on all the time - tap the *orange* (i think, dmay be diff on your car) wire on the ignition column. a multimeter is your friend.
the other wires, from what i know of GPS/AV systems from alpine are to stop the system from being "used" without the car in park, brake on, etc. If i were you i would call Alpine and ask what the deal is with "brake" and "handbrake". If your car has a dimmer for the dash tou can connect the dimmer to that (again, factory repair manual will help with this), and if you are planning on having more aftermarket stuff you can use the remot on out lead to power that stuff - so you dont have to run the wires from the IGN column all over the F-ing place.
If i were you, i would always test it out first, but maybe connect the brake and handbrake to the ign lead, so they are always on? I think alpine has their **** rigged "'for your saftey" so that you cant use anything if the car is going. But im not sure.