When you take down the OHC there will be a wiring harness attached that you have to unplug to take the OHC completely out. Get as much of that wiring as possible. It will run to the drivers side down the a-piller to the dash. The more of this you get the better. You will have to splice 3 of wires behind the radio, 2 too the dome light and 2 too the front of the truck to the temp sensor. With it being a limited I would guess that it has a sunroof? From what I understand they are a lil different too wire up so I would wait and find one with out the sunroof. Plus the sunroof models don't have the sunglasses holder.
2001 XLT 4x4 3.0 Fleetside Conversion
AC Mod, Turn Signal Mod, 265/70/16 AT2s on Chrome AR Chambers, SS Headlight & Fogs, 06 Corners, 06 Tails, Mustang Dome Light, Auto-Dimming Rear View Mirror, Lighted Dual Visors, OHC