pretty vague....if you have LEDs that you want brighter, you need to replace them with better LEDs and then change the power source to meet the specs of these new LEDs, not really a simple process for not tech savvy person, but none to difficult either...with a few more details (where are these LEDs and how much power are they getting) we could prolly be much more helpful, also the mods will most likely move this to the automotive lighting section...unless of course you need a high powered LED flashlight to complete your automotive work, in which case i would recommend the quark123 or nitecore EX10 they are compact enough for the famous "teeth carry" whilst doing the upside-down under the dash wire splice job:o