Save yourself the effort and get a HDMI wireless transmitter/receiver from Best Buy. $169. (I didn't pay $199)
iogear wireless hdmi - Best Buy
Yes, its more than $20 for the splitter, but the versatility of the product opens the door to you putting a TV ANYWHERE you like, without having to run wires. I have run an extension cable to the edge of the lake with a TV (while I was fishing) to watch a soccer game. LOL - This is glamping afterall...
I have the transmitter plugged into the back of my DirectTV receiver. There is a hardwire OUT on the transmitter that has a traditional HDMI cable running to my main TV.
I then move the HDMI wireless recevier (very small box about 4" sq) to what ever TV I want to watch my DirectTV on.
It's a simple plug'n'play install. Just plug it in, it finds the tranmitter...it just works. Full HD. up an running in about 30 seconds.
Range is approx 100ft, full HD.
I've used it in my TV in the bedroom and the outside TV with 100% success and perfect video and sound quality.
Since my DirectTV is IR, it goes through the walls too (added bonus).
My days of cutting holes and running cables are long over.
10 out of 10 in my books