Accessory feature for vehicles with push button start?

[Revved]

I know this should probably be in the wiring section but there is a better chance of getting a well rounded answer here...

I'm wiring a car with a push button start from a Ford GT and from reading the instructions on the kit pushing the button once turns on ignition, pressing and holding starts the engine... So what about accessory?

You get to your destination and are sitting in the car waiting with the engine off and you want to listen to the radio or roll the windows down...

I'm wiring the car with an ISIS system so it easy enough to wire a latching switch to turn on whatever circuits I want but it got me thinking...

How do you turn on accessory features in a production vehicle with a push button start? I know accessory delay will keep those functions on for 15min or so after shut down but what then? Push button start is fairly common nowadays in higher end vehicles so someone here has to be able to answer this.

Thanks

[smhigh]

Most systems I'm familiar with have you step on the brake and push the button to start.

If you just push the start button without pressing on the brake pedal it turns on accessories.



Here is a description of an add on system....

Functions
This kit has 4 functions for the push button start feature.
Once inside vehicle
***Without holding the brake***
1. Press the button once for ACC (radio)
2. Press button a second time to turn the car into the "ON" start (All electronics on)
3. If you press the button a third time this will shut the entire system off (all electronics off)
*anytime during this process you can press & hold the brake & push the Engine start button to start the engine. You do not have to turn the system into the off state to start the engine
***With brake pressed***
1. Press the engine start/stop button to start the vehicle not to exceed 1 second
4. Hold the brake & press the button for 1.5 seconds to turn the vehicle off so it will not shut the engine off if button is accidentally pressed.