Take a look at the pictures in this post. This is how mine is cabled.
T.V. connections
I just took a look through the
MANUAL , and the only mention of HDMI is the button! D'oh! The way mine is cabled, all it does is pass-thru from the front HDMI connector to the rear HDMI connector - the Furrion does absolutely nothing with it! (There is no cable attached to the rear HDMI port either).
AND, even if you connected an HDMI cable there, the Furrion does not use it! All it is is a spot to plug into. Why not bypass it completely???