Looks like it could work in the Enertia!

http://www.hdforums.com/forum/tourin...eadlamp-7.html

And I found it for $270.00 online. Don't expect a 30mile payback! But every little bit helps.

I went with a lower priced ($15.00) solution of a 35watt Halgogen bulb on JCWhitney for testing. It's fine for daytime use but I don't recommend it for nighttime use. And I have noticed NO increased range but it's just one of many things I plan to do. It will add up!

All the best,
Aaron Lephart