Not all LED's are equal, pay close attention to light color and lumens, both very important. The side and clearance lights are the same, bayonet single contact with both pins at the bottom of the bulb. The docking lights are harder to find they are H3 55w halogen, I found some replacement bulbs on New Egg with a cree and high output side lights, but the length is critical I forget the #, the lights draw 13w and are not nearly as bright as the halogen but 110w verses 26w is a no brainer. The Newegg part for H3 bulbs is 9S1A7PAOR63745 it's a H-3 Cree + 5630SMD chips from Thunder