Like MattSCSS mentioned, if you are willing to convert the electrical system to DC LED lights are a great addition. They are 3-4 times more efficient, last longer and produce a nice kelvin color. Trail Tech has some nice stainless steel post mounts that draw around 10 Watts. They are available in one of our banshee light kits with mounting brackets.
http://www.trailtech.net/A112-SX.html
or, we have a multisurface mount kit for flat surface mounting.
http://www.trailtech.net/A182-SX.html
Just a heads-up, we will have a new 75mm LED light coming out this summer that will rival the SCMR16 HID lights we have. It is an amazing light.
Garridan
Trail Tech
360-687-4530