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  1. 4th Generation Optima (2016 - 2020)
    Has anyone replaced their turn signal bulbs with LED and if so any issues with light bulb warnings. If so does the on/off-response/illumination time change?
  2. 4th Generation Optima (2016 - 2020)
    I replaced my rear turn signal lights on my 16 Optima for LEDs After replacing both rears I went and tested the lights. I had a yellow triangle on my cluster and the lights were flashing fast. Do I need to change all 4 turn signal lights as well as my mirror lights for this to work? Did I...
  3. 4th Generation Optima (2016 - 2020)
    Hi, I have a 2016 optima lx and I bought the switchback LEDs from the K5 Optima store but I do not know where to wire the resistors, I looked across old posts on the forum but my connectors are different than the previous gen optima connectors. If anyone could help that would be awesome!
  4. DIY : Appearance And Body Modifications
    Recently, I switched over to Diode Dynamics for the side marker switchbacks I'm using. I used to use a dual row design, but it was never weatherproofed properly, and my own efforts never worked out quite right... So, here's what I switched to: HD LED Switchback Strip (Single) x2 Here's what...
  5. K5OS - 2016-2020 Kia Optima Products
    Is excited to finally bring to the Optima community: 2016-2018 Kia Optima Rear Sequential Bumper LED Light (BUY NOW) Description: Separate your new 2016-2018 Kia Optima from the rest with these brand new custom sequential bumper LED lights LEDs are installed in OEM factory bumper reflectors &...
  6. K5OS - LED & HID Lighting
    Here to present another great LED product: The 80 Watt CREE 1156 LED Turn Signal Bulbs (BUY NOW) Description: These super bright CREE LED bulbs are a sure way to get you noticed These can be used as front or rear turns signals (See below) Powerful 80 watts of CREE LED light per bulb Load...
  7. K5OS - LED & HID Lighting
    Here to present the Optima family: The Kia Optima Combo LED Package (BUY NOW) Description: Swap out all your boring stock light bulbs at once with this Complete Combo LED Package These bright LED bulbs are sure to impress and make your Optima standout from the rest Save $20 or more on this...
  8. Interior and Exterior Modifications
    Hello all. I recently bought and installed a pair of LED switchback turn signal bulbs for my Optima from Sick BMW, and they work just fine. They are from iJDMtoy. Installation was not difficult and I have been pretty satisfied with them as of yet. Here's my issue. When the parking lamps or...
  9. Blog
    OK, so I am new to the forums, and this is my first post, but had to be done. I was researching everything to get the switchback LEDs for my front turn signals (my rear is LED already on the SX). I have a lease, so I cannot mod my sled too much or there could be issues. I want to outline the...
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