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I also disabled the rear defroster (fuse pulled from the under hood fuse block).
For those not familiar with this strange quirk of the Insight: the owner's manual states that the rear defroster comes on for 25 minutes every time you start the engine when the coolant is at ambient temperature, regardless of what the ambient temperature is. (Even if the cabin switch is in the off position.)
I haven't tested to confirm, but if true, it's not an insignificant load - it's a 30 amp fuse!
For now I just pulled the fuse. As with the electric power steering disable, it wouldn't be hard to rig a switch + relay to re-enable it from the cabin (meaning 2 switches to turn on the defroster grid).
EDIT: I have to wonder if there isn't some other reason that Honda did this, since it's not well thought out from a safety or efficiency standpoint. It almost seems like they needed to see a 12v load on cold starts for some other reason and just said, "hey, why don't we use the rear defroster on a timer for our load?"
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