Spent three days looking for this schematic:
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The Subaru does not have an intermittent function on the rear wiper, and driving along at night stopping every 20-50 feet I don't want to think of the rear wiper in the rain. So I found the schematic and started looking for parts.
Since there isn't any electronics industry in the town I live, (um, there isn't ANY industry, except for the Granola bakeries...) and Radio Shack doesn't really cater to hobbyists anymore, the price for the components, a 'breadboard' to build it on, and an enclosure came up to >$18. Then spend an hour or two building and testing, and another hour installing, and we're talking some serious effort here.
Why not just do this:
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Whopping $9.99, with $7 shipping ($17) and 10% off just because (Use those coupon codes!) Shipped for