Or, you can do like I'm going to. My car didn't have the convenience group, so I'm going to connect a parking brake switch to the "BRAKE" light in the dash panel. It operates by being grounded. You can even get one of these, so the parking brake warning flashes, and wire it in between the parking brake switch and the dash. It handles over 1 amp, so will easily power an incandescent 194 bulb (0.3 amps):
This pulsing strobe module produces a continuous flash that is perfect for vehicle LED warning lights or hazard lights. 12V DC Operation with a maximum load of 1.25 amps. Weather-resistant housing easily mounts to vehicle with double-sided adhesive. Includes 6" power wires. Price per strobe module.