ok, ive recently re-fitted an EP9 when i changed trucks it has a built in solinoid. anyway as for wiring the winch in you will need 3 meters each of live and earth cable and a cut-out switch, i fitted the cutout onto the front of the battery box so it sits between the passengers feet, but can be reached from the drivers seat.
you wire the battery live into the back of the cutout with a small lengh of cable, then you run the live from the cutout to the winch. you also run the earth direct from the battery to the winch. i droped the cables out of the side of the battery box then run them up high and tight along the chassis rails making sure they are well tied in and no chance of hitting anything (exhaust etc) then under the engine still tied to the chassis, then up into the winch.
its very easy, i bought a wiring kit from here but you may have one already..
http://paidia4x4.com/product_info.php?cPath=23_71&products_id=123&osCsid=e91a38a68099ff617fb719752004703bcutout
wiring to battery
coming out the battery box down onto the chassis rail
along the top of the chassis rail to the winch
the finished project
cheers