I just had Kubota rear remotes installed on my B7800 prior to delivery. The factory set up has 3 hydraulic lines going to the remote valve body--it's a TNT set up. Hope this helps.
Okay, attached is the Kubota Rear Remote set up for my B7800. It has 3 hoses that go the valve block. The other 2 hoses are attached to my tilt cylinder
The push pull switch on the right upper corner of the mounting plate is the switch for the extra lights I attached to the ROPS. It's a waterproof and sealed switch rated for 15A that I found at a marine supply store, it's all metal--no plastic.