If you want to play around with doing the same thing, you will need to buy the composite video to Sony monitor cable adapter from Tim at RV Cams. The adapter is in the $20 range. You might also need an S-Video to composite adapter for the laptop. (Composite video uses the "RCA" type of connector - one center conductor and a round shell. S-Video is a bunch of little pins - here is a reference. Scroll down the page for pictures of the plugs.)

Plug in the Sony adapter to either input "B" or "C", plug in the S-Video adapter in the laptop and connect the two with a small diameter video cable (small diameter for ease of snaking it out of the dash area.)

You might find the most difficult part of the entire effort is getting your laptop video card to actually use the TV (or S-Video) port. Read your laptop's manual (I know - that's like admitting defeat - real men don't read no stinkin' manuals) for instructions on how to turn on the output. One trick that I found is to plug everything together, go to the graphics adapter menu and turn on the TV output. Your laptop will probably shift the resolution down (everything is now in larger print and graphics) which is a good thing due to the low resolution of the Sony monitor.

That's it - not too complicated but fun and relatively inexpensive. Do not stare at your backup monitor while driving trying to figure out what the fuzzy words mean - you will crash and die and other bad things might happen as well.