push button start in a lincoln

You will have to disable the steering lock.  All of the wires you need are listed below, you will have to use relays to power these wires.  There will need to be at least one toggle switch and a pushbutton for the starter.  Let me know if you want to use only one toggle switch for Acc and Ignition.

	Battery		YELLOW		(+)		IGNITION SWITCH HARNESS
	Ignition 1		RED / LIGHT GREEN		(+)		IGNITION SWITCH HARNESS
	Ignition 2		BLACK/ GREEN		(+)		IGNITION SWITCH HARNESS "2ND ACC"
	Accessory 1		GRAY / YELLOW		(+)		INGITION SWITCH HARNESS
	Starter 1		RED / LIGHT BLUE		(+)		IGNITION SWITCH HARNESS

This is a picture of the back of the toggle switch.  It needs to be Single Pole Double Throw,  On-Off-On switch.

This is a picture showing how it needs to be connected.  The Black cylindrical looking thing is a diode.  1n4001 available at Radio Shack.   The silver band on the diode needs to be connected exactly how it looks in the picture.

Ground terminal 85 of both relays.  Power from the Battery wire (Yellow) also needs to go to terminal 30 on both relays.  Terminal 87 of the accessory relay needs to be connected to the  Grey / YELLOW wire of the vehicle.

Even I am confused by the info I posted.  It is calling the second Ignition wire a second accessory wire.

Try connecting terminal 87 of the ignition relay to both the RED / Light Green   and the BLACK/ Green 

The RED / LightBlue is the starter wire, it should be connected to the pushbutton switch.   It must be a momentary pushbutton switch with normally open contacts.