I recently purchased an FT-857 (Yaesu amateur rig) to install in my Dodge Ram. I did a search on here before posting this, but all that came up was a thread where someone used sticky tape to mount his Spectra remote head and all hell broke loose. There will be no sticky tape in this installation, for what it's worth.

One thing that is clear is that it would be best to ask for advice before starting on this, hence this thread. I have the "separation kit" which consists of three cables -- one with an RJ-45 jack, one with an RJ-11 jack and the speaker cable. It also came with a plastic plate which the head unit snaps onto.
Here are my thoughts on this, so far...I've pretty much decided to mount the radio itself under the passenger seat. The antenna is an ATAS 120A which tunes automatically with this radio. It will be mounted on the front-most stake hole pocket on the passenger side using this mount - http://www.geotool.com/antmount.htm.
I need to get power to the radio under the passenger seat and need to run cables from there up to where I'm going to mount the control head. I was planning on placing the control head to the left of the stereo on the dash. I can take pictures of this area and post them later...reason I'd like it up high is to minimize having to look down to adjust the radio. I know ideally I should stop the vehicle to make any adjustments, but for glancing up there to make note of the mode or frequency I think it would be safest up high. The only thing that concerns me in doing that is the .5 inch hole needed for the RJ-45 plug. I suppose I could just cut the connector off, pull the cable through the smaller hole, then install a new connector, but...I'm not sure if that's a good idea. Also, while I have a crimper for RJ-45 jacks, I don't think I have a die for RJ-11 jacks (nor RJ-11 jacks, for that matter) either.
I would rather not mount an external speaker, so was thinking of getting an aux input for the stereo to run the audio into.
Any constructive thoughts on this are much appreciated...
BT