RB25 changing starter button to key

[skydrifting]

Hey there everyone. I just bought a 240 with a RB25DET conversion but they put the starter button in the engine compartment and I have to pop the hood every time I start the car. I know that the button goes to the battery and then to the starter with its own conection. How would I change the set up to start with the key again or is it to hard because of the ECU swap? Can I just find an ignition wire and plug in or is it more complicated. Thanks- D