After reading through the different forums I was inspired to add a third brake light due to the increased safety aspect. I liked several of the different ideas and settled on the LEDs under the engine grill. The area under my engine grill isn't smooth, pretty, or flat so I came up with the idea of fabricating some stainless steel brackets. The brackets were made with 1/16" flat stainless steel stock. I made the tabs on the ends 7/8" long, the long part was made 14 9/16" long, and it is 3/4" wide.
I wanted to put the LEDs onto the strip of SS and have that mount behind the outside edge of the grill. I utilized the mounting holes that were already in the grill. When installed the SS strip is perfectly centered between the vanes of the grill. I drilled a small hole at one end of the strip and I put in a rubber grommet to protect the wires. I ran the wires under the engine lid, zip tied it to the lid hinge, and ran it down the side of the engine compartment. I used the flexible wire cover that the hot-rodders use to make it look nice. I plan to affix the wire cover to the side of the engine compartment with some silicone but I still need to buy that. I tapped into the hot side of the brake light and attached the ground to the spot where the other lights were ground.
I used two 12" LED strips and those were affixed to the SS strips with the 3M adhesive that was on the back of the strip.
In the last photo I wired the lights to a battery to test the function. It is very bright and very fast to light up. After testing I finished the final wiring and it looks very clean. The SS strips make the LEDs lay flat and gives them a little lift to put them right under the vanes. I centered ny medallions to not block the lights. I guess I have room for one more and I'm hoping Santa brings the one I asked for.