If you have a 94-98 Dodge, or a 94-02 Dodge Sport, these are plug and play. For the rest of us though, these need some rewiring to work, and Spyder doesn't seem to provide any documentation on it.The main issue is that there are two sets of lights in these housings, HID's for main headlamps, and Halogens when you need bights. Most of the non-sport Dodge Rams in this era only had single headlamp designs that did both. This causes a major problem mentioned by a previous reviewer where the headlamps keep the high-beam indicator on, regardless of your mode. This wasn't the biggest problem though, as the stock wiring configuration doesn't allow enough power to get to either the HID or Halogen for proper light intensity.For my 2001 Dodge 2500, I had to rewire the headlight plug on the headlamp side (thankfully, no modification of the trucks wiring was needed). In the hopes it might help someone else, here's what I had to do:The headlamp housing plug has a total of four wires running into it, blue and black from the HID, and red and black from the Halogen. The two blacks share a common pin at the plug, and the blue and red both have their own pins.1) Cut red wire between the Halogen and plug, leaving about 2-3 inches of length from the plug2) Splice the red wire from the Halogen into the blue wire that runs between the plug and HID3) Cut the black wire running to the Halogen (make sure not to cut the black wire to the HID!)4) Connect the black wire from the Halogen to the red wire on the plugOnce this has been done, test the light and it should function like this:Normal - HID on, Halogen offBrights - HID off, Halogen on at full strength (there should be no question it's bright)I think the main wiring issue here is power. HID's take a lot of juice, and the Halogen needs to donate it's power to the HID when not in high-beam mode. The same is true in reverse.As for the look and feel, I like them. They have decent style, and the LED + CCFL's act as a very nice running light setup. Not too bright, but enough to standout in the day. I still only give these 2 stars though, because a normal person without automotive electrical experience could get themselves into a lot of trouble. These should just plug in an go, or at the very least come with an adapter for the models they claim this works with. If you still want these, just be prepared for some rewiring, or take them to a professional to install. With all the headaches, this turned what should have been a 60 minute project into about 6 hours (and I needed a third hand at times).I bought these because I liked the idea of the projector headlights and they looked cool on other vehicles. It was the worst mistake I've ever made on my truck and they caused all kinds of problems. First of all, don't expect to get any help or support from Spyder. They won't even talk to you. How does a company make a product and not support it? This concept just baffles me.I installed the headlights as the poorly written instructions indicated. They were full of misspellings and a little confusing. But I got it right. When I turned the lights on and switched from high to low beam I noticed that the high beam indicator stayed on. And when I switched the high beams on at night they were very dim. So dim that I could not see on a very dark road. Of course calling Spyder was no help so I searched the web for answers. More than a few people were having issues with these lights. A couple of days after installing them a main fuse blew for the ignition leaving me stranded. I was able to switch it out with another big fuse that wasn't being used under the hood to get home. But the next day that fuse blew too. I realized that these lights were drawing more power than the stock lights. More searching on the web I found people saying that they put in a heavy duty relay that draws power directly from the batteries for these lights. Searched for one but couldn't find one that was specifically for these lights. At this point I uninstalled them and went back to the stock lights. No problems since.If I need a relay with these lights, then tell me I need one and make one available. These lights are garbage and they won't work on your 94 to 02 Dodge Ram without major modifications to your electrical wiring to your lights. If Spyder would provide technical support and update their poor installation instructions and recommend or supply a relay with these things then they might work. But I have my doubts.These are great looking lights but.... they are not very bright and cannot adjust the low and high beams together. Get lights adjusted so the low beams are right and then the high beams are way too high. Adjust them so the high beams are correct then the low beams are way too low and aimed at the ground. I have tried everything I know in order to get these lights adjusted. When they are off and you are in the daylight. These are amazing looking lights but just do not work in the dark. I have gotten where I won't drive my pickup after dark because of these lights. Don't waste your money unless you just want to look good in the daylight.I have a 1998.5 Dodge Ram 24v Cummins 2500 4x4. These headlights look amazing. The H1 lights they send are very dim and not worth a crap. I knew this before I bought from others who had purchased them. I replaced the stock bulb that comes with the housings with 55 watt HID H1 bulbs and LOVE it. All the pics are with the HID kit installed.They look great but please be aware that the halo wires will show signs of burning. I had to disconnect mine as they connectors melted.Haven't seen lights function yet but packaging was superb and nice quality lightsThe way that the lights had to be wired was not legal in Florida, it is against Florida law to run during daylight hours with parking lights on. Also they did not light up the roads as desired, and high beam was way too high in elevation, the high and low beam should have been made to adjust separately.bought these for my son and he loves them, not sure what else to say about them, he loves them and that's all that matters, though they look good on his truck.