4 will work for power and volume.
My question is does anyone know how to get the TV input to work for the Vizio? Many thanks.
Thanks for your comments above Ka7niq. It's always good to get multiple opinions/viewpoints on something like this. And I'm glad to hear that you're getting such good performance from the S185.
If my previous comments came across as overly negative, then let me reiterate a few of the positives on this unit as I saw them...
Another "pro" on this model is the RCA audio outputs, which have been dropped from most 2013 players.
My biggest gripe with the S185 was the green push/clipping in the RGB HDMI mode (which is a fairly common issue on low-cost players). But I suspect that was probably fixed in the 8-28-12 M09.R.0054 firmware update. (My S390 now has essentially flawless color in the RGB HDMI mode after a similar update.)
Other minor gripes included the occasionally bad vibration noise, which is undoubtedly related to the lightweight/plastic construction. (2013 Sony players now have metal cases again.) And the occasional lockups when scanning discs in fast-forward or reverse.
By "lockup", I mean that the player would get stuck in fast-forward or fast-reverse mode and couldn't be stopped. I still get these same kinds of "lockups" from time to time on my S390 (even with the AUTO DISPLAY setting turned OFF). And the only solution is to hold down the power button on the player until the unit goes completely off. I sometimes get noticeable vibration noise when playing BD or DVD discs on the S390 as well.
I also wish that the S185 and S390 had a little better virtual surround sound processing for its stereo RCA audio outputs. I mainly listen on headphones via the RCA jacks, and Sony's virtual surround is not quite as flexible or dimensional as some other V-surround systems I've tried. The Sony players are pretty good with "front-to-back" virtual FX, but not as good with "side-to-side" virtual FX in the rear/surround channels. And sometimes I also have to switch the player's Downmix setting from Surround back to Stereo to deal with "imaging" issues on certain DTS-MA Blu-ray audio tracks. (Snow White & the Huntsman, and On Her Majesty's Secret Service are two Blu-ray discs where I found this necessary.)
If you're using a 5.1+ receiver though, then the player's virtual surround capabilities are probably a non-issue. And the new 2013 Sony players don't even include stereo RCA jacks anymore. So for most other listeners, the players' virtual surround capabilities would be irrelevant.
Aside from those minor issues, I've been very satisfied with my Sony player, and generally very happy with it's AV performance. Lately, I've been experimenting with 1080p H.264 MP4 video playback from a thumb-drive on my S390, and I'm very pleased with results. The player can even handle progressive 1080p files encoded at 60 frames/sec, which exceeds the official Blu-ray spec.
If I'm overly critical btw, it's because I expect alot from Sony video products (even the low-end ones), because I've had pretty good experiences with them in the past.