Strange you should bring this up... . :-laf
Just yesterday I finished my own Sportlight install on my '02 - the stock lights weren't bad, just not nearly as good as what is now commonly used.
The lights themselves are DEPOT brand, and I bought the Dan Stern relay/lighting kit. The lights are great - but some of the components in the Stern kit
SUCKED big time!
Main poor point in the lighting kit was EXTREMELY poor cable end fasteners - not NEARLY big enough to accept the wire sizes suggested in the kit - and only BARELY big enough for the wire sizes supplied with the various socket pigtails furnished - all that was bad enough in itself - but the connectors themselves would NOT accept soldering to reinforce the inevitable poor connections!
Added to that, was that the instructions available from the Stern website includes no manufacturer color code for the new bulbs, so testing must be done by the user to determine which leads are common, hi beam and low beam - and the 2 light bulb types in each new headlight assembly each have different connections for their hi/low circuit.
This leaves the user with a VERY poor and weak installation that simply BEGS for a rough road to vibrate stuff loose and leave you in the dark out along some lonely road...
And finally, when I *did* get stuff all together, those same connectors would NOT seat properly inside their provided sockets for a normal relay plug-in installation, and instead, I ended up having to simply plug connectors DIRECTLY to the relays, with no proper way to securely mount them - that's the part I will be adapting and finishing up today...
ALL in all, it will take me over a full day to properly adapt/complete a job that SHOULD have taken less than HALF that time - and I'm no stranger to electronics/mechanics!
The physical/mechanical part of the swap will (usually) require loosening the 10 bolts or so that hold the bumper in place - my lights were still VERY hard to remove/install even after that, but a total bumper removal is a pain.
The biggest single hardship in the headlight removal/install without complete bumper removal, is that damn stud on the backside of the lights that is secured by a push-on retainer that has NO easy way to remove, and then hangs up and scratches the hell out of whatever it drags upon as you literally have to FORCE it on out past the bumper once you DO get that push-on fastener loose.
On mine, at least for the new replacement lights, I totally removed that offending stud - I'm certain it performs very little usefulness as far as securing the light assembly in place, and more likely was just an assembly line assist to hold the light in place until later assembly completed the bolt-in process.
At any rate, my lights are as physically secure without that stud as it was with it in place - and it will also make any possible future headlight/bulb servicing FAR easier and faster.
Bottom line is, for me at least, you'd likely be FAR better off to use one of the aftermarket complete wiring kits with all the harness provided, than working with the Daniel Stern "wire-it-yourself" kit.
Bottom line, would I still do it if I had known what a pain it would be ahead of time? Dunno - I sure do appreciate the better lighting - but I sure do hate untidy, sloppy and poor installations that potentially do as much harm as good - and if you are like me, use the above info wisely...