I purchased a really cheap system from Amazon for my 195RB and it works fairly well.
http://www.amazon.com/gp/product/B00S5NBZ6M
You'll need a bit of electrical knowledge, but if you have just enough to be dangerous, that'll probably suffice. This took me about 30 minutes to do. Picture quality isn't absolutely perfect, but it is manageable. ESPECIALLY for the really cheap price. You can see the pictures of my installation in my Amazon review.
Now we'll just see how long it lasts...