You'll also need a starter with a solenoid if you use a dash mounted push button associated with the key. In other words, you need the solenoid with any starting method except the floor mounted stomp pedal starter. Also, if you use a starter with a solenoid, and want to start it with the key switch, you'll need a key switch that has an on position plus a start position. The original 47 thru 53 key switches don't have that feature. They are simply on or off.