What year jeep wrangler is it? That would make a difference, but Jeeps are easy. Wranglers are pretty easy for the older body style 03-06, but the new jeep wranglers are a little harder. Whats needed on the older one is drill 4 holes, and use some wire nuts. A day project if you are untrained. RISK? some extra holes on the passenger side thats about all. If its a 2007 I wouldnt try it myself prolly..... remove alot of stuff, alignment is kinda tricky, but a shop shouldnt charge you too much.
I would just use magnetic towlights for cheap, but all the wires you would need to use diodes on are in the drivers side cargo area, and feed thru a large rubber grommet. The bulb and socket kit is what I use on jeeps, but it is a pain in the butt to install on the 2003-2006 jeeps.
On 2003-2006 Jeeps
A cheap solution is to also try a universal towbar bracket kit (can order seperate from the whole towbar kit $45 or so) some adapter pieces from blue ox or roadmaster and a high grade towbar aventaII or whatever. If you only do small light towing this setup is "ok" Just drill 4 holes on the bumper where its bolts to the frame. You get what you pay for in towing however!
Steve