Hoping to finally come to the end of this dilemma. On Monday I spoke with Baja Designs and discovered some interesting info. They confirmed the lightbar they sold to GM is in fact the S8. However, they said their normal S8 is a 3-wire, just like their ONX6 lightbar. The reason being is the S8 has amber LEDs in the lightbar that are on when the main lights aren't on. This would be a cool feature to have, but it's useless to me due to being in California. They have a stupid law where an offroad light must be covered while the vehicle is on the road if it's more than 40 inches from the headlights. This same law is also why you can't buy a 2500HD or 3500HD with roof mounted clearance markers in California. Therefore, GM wanted the lights without the amber LEDs, and because the S8 is cheaper than the ONX6 lightbar. Thus, the S8 lightbar sold through GM Accessories became a 2-wire setup. Baja Designs Technical Support wasn't aware of the differences. It took me pulling apart everything and providing pictures for them to see what was going on. I offered to bring my truck to their shop several times since I'm only 30 minutes away, but they never accepted the offer. If anybody else has attempted to install the lightbar they'll find GM requires you to buy an additional wire harness to make the lightbar work. This wire harness has a relay, connects to the truck battery, has a key fob remote, and a remote signal receiver box that plugs into the wire harness. Baja Designs claims they made the wire harness only, and not the key fob and remote signal receiver box. When I examined both of these items I noticed there wasn't a single Baja Designs marking on them, so this seems to be true. It should also be noted this harness also has a connector for the a-pillar lights, which are another add on through GM Accessories. At the end of the day it was decided that portion of the harness that connects to the a-pillar lights is not needed. If I choose to add the lights later I'll probably wire them to a separate switch. I'm not sure if I even want them, or if it's rather have them on the same switch as the lightbar. If I choose to go with the same switch I can simply order a Y-harness Baja Designs already makes and sells, thus making it a simple plug and play option. I'll need to review data to make sure I'm not overloading a switch if I opt for this. Baja Designs has sent me a 2-wire harness for connecting the lightbar to an auxiliary switch. I think this will finally put to bed all the issues this project has experienced. Sent from my SM-N960U using Tapatalk