Greets; am very happy with the set-up I got through:
http://www.danielsternlighting.com/home.html The man is a busy consultant, and rep. of the CIBIE conversions. He can also get you lined up with an amazingly well built harness expressly for XJ fitment. The prices are HIGH! (relativity factor). However, the French glass prisms are great, and the German Osram H4 bulbs are well.., enough said. Additionaly, I use the metal mesh "Stone Guards" to protect 'em. Using your stock XJ system.., it's all plug, and play. One thing though.., it takes a bit getting used to any conversion, me thinks.., lol, as you must ascertain by reading all the coments thus far. Example: My stock sealed beam lights by the usual offerings were just plain inadequate, especially with old thin wiring. (As most have suggested do NOT screw around with a superior light bulb/lamp upgrade unless you use an upgraded wiring harness). After installation, which took very little time.., it was recommended to 'aim' the low beams 3" lower than that for regular sealed beams. If you go to the link provided above, and check the page links provided you will learn that, and the why-for's. Once out on the nighttime road I was very impressed with the ability of the CIBIES with the OSRAM bulbs to display both sides of the roads better than oem, on the low beams. (guess I could say duh, but...). The thing that blew me away was when I hit the high beams! KaBoom.., a very tight beam out to a thousand yards, (or better), and the difference between switching from a wide display, to a narrower one was quite shocking to me.., and takes getting used to. They do tend to be on the bright white side, and road signs really light up. On wet roads, with bright road signs, and lot's of darkness all around, my eyes seem to have to adjust more frequently between such stark contrasts whilst switching between highs, and lows. One thing 'fer 'sho.., I've got a better visual/braking reaction advance time now, in order to deal with moose crossings, etc. After the initial oem specifications in the aiming proceedure, the necessary lowered 3" adjustment, etc., I found that I still had some room for improvements by making a 'mental-note' of the two patterns.., and then when safe, i.e., stopped off-the-road, I'd make further minute adjustments with the Phillips screwdriver 1/4 to 1/2 turns on the handle and 'see' if'in that fine tuning was 'mo-'betta, or not. Most 55/65 watt oem dot beams are ok, and will be enhanced with the addition of a harness, with relays, fuses, etc. However, 65/75 watt Osram beams, higher/any brand, etc., will draw attention to yourself IF you do not follow aiming instructions. In any case, if some cop really wants to bust you he will check to see if there are the proper embossed codes on the glass. Where I live, there are no inspection requirements where it could be discovered that one is running illegal headlamps. Buyer beware.---