OK on the block heaters - you've convinced this Wisconsinite.... Now for the $64,000 question - self install or the dealership? Fairly handy with a torque wrench but the wiring instructions I've seen look a tad complex as far as routing from the plug to the block. And how about that encouraging DIY "Customer Information" from Honda on the first page. Dealer costs and experiences anyone? A newbie thanks you in advance.