If your search for LED lighting on here, you will find a wealth of info. Topic has been covered, with pics, sources to buy from, current drain...... and the list goes on.
Of course if you just want dimmer light, there was a thread a while back, someone modified his fixtures with resistors to cut down the brightness. Might try searching for that also. Great site here, just got to dig sometimes to find the treasure.
2012 Ford F250 ext. Cab 4x4
2002 Jeep Wrangler Sahara
2008 Yamaha V-Star 650 Classic
2008 Work and Play 18LT