The wiring to my headlight (06 Electra AVL) is thin, weak, and full of non-useful resistive connections. Bare once posted the idea to replace the direct 12 V supply with a relay wired directly to the battery to significantly increase illumination. The link below is from the magazine Motorcycle Classics that outlines how to do this with relative ease!
http://www.motorcycleclassics.com/mc-how-to/install-headlamp-relay.aspx#axzz2fwSijCDqI plan on doing this and will update after the modification.