Mike, I can't say about the icom.
The 13.8 VDC goes to the ts-480 radio.
The head gets its power with in the rj12 cable that connects it to the 
radio.
The head has everything you need to run the radio, but the mike and paddle 
plug in to the radio, not the control head.
Their is a speaker in the head.  which fires backwards to save space.
The headphones plug in to the head, but the external speaker plugs in to the 
radio.

----- Original Message ----- 
From: "Michael Ryan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, January 30, 2015 11:21 AM
Subject: Kenwood TS-480SAT remote head operation


> Hi all:=20
>
> I know there's a couple of TS-480SAT users on the list so I gotta =
> question about the remote head.=20
> How does it receive its power if you have the 2 units separated? Is =
> there a separate power connecter that you plug into the 12 volt =
> accessory plug in the car?=20
> Perhaps there's just enough voltage carried over the cable with the =
> RJ-11 cable to power the head? Is this how all the sep kits work =
> including the Icom IC-706?=20
>
> 73:=20
> Mike DE VO1AX=20