Hey everyone. So with all these products that we have on the site, where needed we try and make sure that we have plenty of support for you and the product. One of the best ways to do this is by going to DIY Install page. Here you will find either links to an external DIY or our own DIY. Whether or not you use it is going to depend on your experience with installing aftermarket products. We always suggest looking at the DIY before you purchase so you can see whats involved. Is it something that you can do yourself by following the DIY or you might decide that taking your car to a professional installer to install the product. Either way, there are great tips in the DIY’s that are good to know so that you can trouble shoot any issues down the line. For example, when installing the HID conversion kit on the Kia Optima, did you know that you should not connect the ground wire to the negative side of the vehicle battery? This is a common practice on other vehicles and perfectly fine most of the time, but on the Optima there is a voltage sensor on the negative side of the battery and if you hook up any accessory to it, you will have a ton of electrical issues. Simple fix is just to ground the HID conversion kit to the frame or another ground point. With modding any vehicle, you will have a learning curve but the more you do it the better you will be and you get to know your vehicle even better. Having done most of the mods myself on my Optima, has helped me better understand my car and I can trouble shoot any issues since I did the install myself. There is a certain satisfaction in doing work on your own car also. As always if you still need help though you can always head to our Contact Us page and send us an email that way. Happy modding.