i am sure the 1/8 inch will work for l.e.d. lighting. by the way dont for get to fuse the postive terminal off the battery dont want the fuse not going and catching fire. i think those 1/8 jacks will handle some thing like 16/18 gague wire max wich is perfect for l.e.d. there low watage lighing may want to consider a seprate 12 volt recetacle for charging cell phones , gps , etc on a seprate circuit fused of course 10-15 amp they sell the flush mounts at walmart etc... any ways best of luck great idea !