Well I'm not looking at the headlights (not yet). I'm just looking at the standard load from having the lights on. And its not even so much of getting a pay back out of the bulbs. Its more of how much MPG can I get. lol If the 0.1hp gave me .01 gallon less all the time during winter it would be awesome. but I'm pretty sure its much less. But the lights are still something i'm considering. I'm still looking for maybe someone who has more experience with electrical savings on the alternator. Rotational mass is always spinning so its not like I'm going to get a % increase from removing the alt all together. But they respond to electrical load. One which could be a of mild benefit.
The Subaru also has a special little feature (what I consider a mental spasm of a design). The day time running lights are the H1 headlights powered on the low beam @ 35W instead of the 55W. So at night given good conditions I swap down other parking lights and roll with the day time running lights. In well lit locations like in town, highways, traffic, the 20W per side is a waste. So for now I'm not after headlights, just all the other bulbs that I use all the time in the winter months.
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