Robert1010- I ran the wires through the mirros like the envoystuff.com guide. It joins back up with the stock wires as soon as it possibly can. I taped the wires completely from the light assembly to the window switch.
The mirror plugs are *not* prewired, you have to do it yourself, but you dont need any special connectors or pins to make the connections. You could solder everything together if you want, but I dont like to mess with solder in smaller areas.
I used .187 guage "slide" (dont actually know the real name) connectors to attach to the light socket and some 18 guage piggyback connectors to attach the wires to the correct wires in the door.
BTW, you might want to pull the fuses in the underseat fuse box for the left and right turn signals when working on installing the lights. I didnt the first time, and wasted 3 10A fuses. Really smrt on my part.
I suggest if you are serious about installing them right, check out the guide in the post above. It is very very easy to do, and doesnt cost much.
Thanks, Erik