Same mirrors I purchased and installed on my 18 hc. Everything is working except for reverse LEDs. I have them as puddle lamps like my small mirrors had. All splicing and diodes were installed in the door. No special harness and no running wires thru the doors. If you had puddle lights on your old mirrors and can live without reverse LEDs you should be able to get everything from inside the door. With 3 diodes. Also my puddle lights now shine right on the door handle.