I have transplanted my Blinder M47 to my new car, and thought I'd share it with you. I never asked placement advice in the forum, since some else had done this and gotten decent results.
The front on this car is quite deceiving. It appears to offer good placement locations for an easy install. As always, the devil is in the details. The major challenge here is that the entire front grille is a flimsy plastic assembly. There is little one can mount to, and what's there probably moves around at highway speeds.
I chose to make a large aluminum bracket that goes from one side of the grille to another. It is made with a combination of angle bracket and aluminum bar stock. The pieces are held together by 3M mounting tape. The whole thing is fastened into place using screws that go through the top of the grille.
I'm hoping that this will add rigidity to the who install while mounting the head in the same plane. This would hopefully make alignment adjustments pretty easy.
The back was a whole lot easier. There was a nice flat surface on top of the bumper, So all I had to do was carefully position the heads, and tape em. 3M mounting tape is a wonderful thing.
This time I decided to mount the buzzer in the instrument cove along with the LED. This will make the alerts much easier to hear. My last install had the buzzer under the dash, where it was muted, and sounded exactly like my toll tag
Finally, the switch is mounted on the dash, where I can reach it quickly with my shifting had during an alert. This will make JTK much easier. My last install had the switch mounted on the other side near the bottom of the dash, where is was difficult to reach during an alert.
You may have also noticed the Cheetah C50 in the instrument cove. That's hard wired along with the TPAS, Redline, and GPS to a switch panel that I made.
The antenna for the TPAS is zip tied to the rearview mirror. I'm going to go back and clip that stupid tie when I'm done posting this.
Finally the CB is installed inside the center console. I stuck the cable for the mic and controls (controls are on the mic for this model). Wired directly to the battery. Luckily, there seems to be no RFI on this car. The CB works great, which I did not expect.
On my last car, every motor or actuator seemed to mess with the CB. It made it into a device that would let me know that my fuel pump is working. No more Toyota's for me!
I hope this helps anyone thinking about buying a Cobalt, or just forming ideas.