I've seen the install instructions for the LED mirror shells. But I'm still a bit confuse about the shell wires. Now my question is this, how do you get the wire from the mirror shells into the stock side mirror housing? The instructions don't clearly state how this is done. Are the wires from the shell suppose to be visible or do you have to drill a hole into the mirror housing and then wire it like that. Because I don't see no other way you can get the mirror shell wires into the mirror housing without drilling. Can anybody shed some light on this for me?