I got the TOYSC1 and SVCDOC installed over the weekend. Sorry, no photos. I took my info from an old post over at backstage (
My 2008 4Runner TOY-SC1 & SC-C1 Installation - SIRIUS Backstage Forum) and one on how to tear out the console, dash and nav system for 2003+ 4Runners that I stumbled onto on the internet.
I put the SC1 in the same black dropdown panel under the glove boxes shown in that link above, I mounted the doc in the "hidden glove" box that 4th gen 4Runners have above their normal glove boxes - I mounted it laying on its back - and shot the data and antenna leads out a hole I drilled in the back of this plastic box.
The toughest parts were 1) dealing with all the cable that connects the TOYSC1 and SVCDOC - my doc and SC1 were 1' apart and no cable was needed - but you have to use that long one that came with the parts - the doc won't plug directly into the TOYSC1, bummer. I routed the excess cable through my center console because it would no all fit "in the dash" even bundled up tight and zip-tied. And 2) routing the antenna wire. That's always tough for me - want it to function right, look good, and not chafe or rub...put up on roof-center, just ahead of the rear lift gate. Managed to get it inside the cab back there (dremeled a relief groove in the metal under the weather stripping, and routed the wire under the stripping from where it came in the door area to where I crossed it over near the bottom of the tail lamp) and routed the wire along the passenger floorboard/trim/sills all the to just under the glove box area.
Some folks take the antenna in through 1 of the 2 grommets back there in the 4R (one is for defroster I guess, other is washer fluid line) but I didn't want to try that. Looked like it was ripe for a failure if you didn't do it just so.
As for the function - the TOYSC1 plugged in and worked perfectly. Based on some old posts at backstage, I set it to scroll from go, and it works fine in the JBL Nav Sys that is available in modern 4Runners. I also went through the volume level set deal I found in an old post at the other board (Presets 162534 in quick succession) and it (TOYSC1) was indeed set to low volme from the factory.