Actually they may be different mfg's !
I mean we have two different mfgs in our rv
One is magnavox and one is lg...
Now you may also be able to connect thru the dvd player
(we have an LG 3D!!!)
so look in your paperwork or look at the units to see the mfg and model # of your tv's and surround sound... and do a search online to see the specs...
oops, just reread and caught the BEFORE
you get the trailer ! sorry - then I'm not sure what to tell you except I'm talking out of my, er, ah, posterior