I have some idea of a design, but I don't have any solid ideas. You can drill holes in the dash and put the button and switch through there, or you can hide it under the dash. Step 4 Connect the power wire of the switch to the accessory you intend to toggle, such as the headlights. Run the wire you crimped previously through the firewall, until it reaches the starter solenoid. Rewire the ignition wires to the switches.
I Made It!
ignition toggle with push button start