I decided to place the rig itself underneath the rear bench seat in my truck, and mount the face on my dashboard. I didn't bother to screw the rig into the floor because it fit rather snugly into the storage compartment under the seat. I did, however, purchase the quick release mounting bracket and if I have a lot of free time on a weekend I might actually screw it to the floor. Here is a picture of the radio, external speaker, and mess of coax under my rear seat:

As you can see, I am using a Duplexer (Comet CF-706) so I can use the ATAS-100 Antenna on both HF and VHF/UHF. The external speaker, a cheapo Radio Shack special, was required to throw the audio toward the driver seat. This isn't the best speaker in the world, but it was much more sensitive than the older Motorolas, which made it quite a bit louder. If I can pick up a small amplifier cheap, I will put it inline with the Motorola and use that speaker instead. Notice the mic cable running up through the center of the truck to the front seat. I didn't want to route this cable through the dashboard to get it near the center of the dash.

To run the cables for the power and head unit, I tucked them under the kick panel along the bottom of the door jam. I used 10AWG wire, in order to handle the 22A draw at 100w output, and they fit under the panel just fine. In the picture below, notice how I routed them around the back of the seat, and down around the side of the storage compartment in order to get them under the panel. This picture is a bird's eye view of the area where the rear door would normally close:

The next two pictures show how I routed the cables in the hood. They don't interfere with anything in the engine compartment and fit right inside the existing grommet for the hood release. You have to pull the grommet out of the hole as you are stuffing cables through it though. I know I should have, but I did not fuse the power leads until I got under the back seat. It is recommended that you fuse the positive lead as close to the battery as possible. Due to laziness, I didn't bother. Do NOT fuse the ground lead. If for whatever reason, the fuse in the ground lead should blow, your radio may seek an alternate path to ground and take out electronic components as a result.

Next came the mounting of the head unit. After much pondering, I decided to mount it on the left knee bolster. This is not the best place for it (especially not if you get in a frontal collision), but I couldn't find any other place to mount it where it would not get in the way of something else. Keep in mind, my truck is a 5-speed, so most of the areas would get in the way of the stick. If you have any better ideas, please let me know! I didn't mount the head as cleanly as I could have, because I was hoping I would come up with something better. I used the bracket that came with the separation kit (YSK-100) and stuck it to my dash with 2 long pieces of double-sided foam adhesive. One mounts the bracket to the dash panel, and the other mounts it to the knee bolster. Here is a pic of the installation:

The location of the antenna was probably the most difficult decision. I decided to go with the Comet RS-730 swivel mount and mount it to the back side of the driver rear door. The particular location I mounted it still allows for both the door and the window to function normally. It was quite a tough compromise to get the window to open. Notice how I ran the coax through the window instead of the door. This is because I didn't want the coax getting slammed in the door every morning when I throw my laptop in the backseat. If I didn't use that door so much, I probably would have ran it around the back of the door. This mount went on very easily. The set screws chewed into the paint enough to give me a sufficient ground for proper antenna tuning and operation, as well as a very solid mount. About 1" of the coil part of the antenna extends over the roof of the cab when it is fully retracted in this mounting position. This is good because my truck is already too high for most parking garages.

Here are some pics of the antenna installation:

You can see pictures of how I mounted the same setup in my Dodge Durango in the Durango section of my page. I hope this information was helpful. If you have any questions or comments, please feel free to email me.