depends on wether or not youve got power goin into your door or not, if youv gota poverty pack with no electrics, you may need to remove your doors to drill holes for cables, this can be tricky, real $%&kn tricky, as when youve done it you require grommets to seal the holes etcetc, a quik shady job is aceiveable tho by pokin the wires out the side of ur kick panel & thru up the side of the door panel. run twin core cable up to u'r new mirrors but keep them close to the front door jam, & make sure that they dont get in the way of ur window when it winds down, plug her in. on the other end just plug it into either your flasher can(repeater can) or indicator wiring (repeater wiring)
if uve already got wiring goin into your door, easy peasy, just run it thru with that, it wont need to be very heavy cable so it'll fit nice. one thing you may need to watch is adding more load to your flasher circuit may alter your flasher speed unless its a really low current draw like an LED, the way around that is to disconnect the flasher(repeater/indicator) on the side of the front panels, you souldnt need them anyway if your puttin them on the wing mirrors.
should look good when done tho.