Dresari702

What Dave said. The factory wire powering the fog lights is likely too small to power both the fog lights AND the light bar (directly). The fog lights will power the coil of the relay, which is a small energy draw. This will act like a switch to close the relay contacts and turn on the light bar.

Yeahhh that's a manufacturer question. They would (I would think?) control the embedded programming of how the lights operate.

When I bought my 2018 Silverado, I knew I wanted to add some extra lights (3” Rigid cube Ditch lights, Rigid Ignite aux reverse lights, bed light strips, etc). Lots of options out there for Switch Pods and Relay boards to control it all….but I wanted something more durable and serviceable. I don’t trust relay modules with small solid state relays in an environment that sees vibration and large temp swings. So I decided to build my own power distribution and relay box, which fits in the 2nd battery location under the hood. With Rocker Switches mounted in my overhead console, to trigger the relays. Is it bigger than it needed to be? Yup. Overengineered? You bet! But it’s done in such a way that I can diagnose problems pretty easily, and all wires are plugged so I can remove the system if needed, or separate into pieces to replace parts. Also allows for future expansion if I want to add bed lights, rock lights, and a disco ball. Started with a 11”W x 7”H x 5.5”D weatherproof junction box on Amazon. Has a screw-on transparent lid. Enough room inside for a 6x fuse & relay box, input circuit breaker, screw terminal blocks, and wire bundles. Instead of doing the entire write-up here…I’ll just mention the highlights. I attached my diagrams/doodles/pics/descriptions, as well as list of parts I purchased, as a PDF that can be downloaded. Questions/Comments welcome. 18 SILVERADO WIRING.pdf

Not personally, but a buddy of mine installed one. He likes it. Hardest part was feeding the cable through the firewall into the cab. Most of the wiring is done for you, which is REALLY nice. No wire crimping, if you don't want to do it.

Here's mine. 4x 20mm illuminated round rockers from Amazon. Used a step drill bit for the holes, and super glued into place.

Haven't tried it, but I've been doing some wiring work under the hood lately. I'll grab a fish wire tonight and see if I can feed it back through on the passenger side.

Well, rats....LOL. I figured it was a long shot, but worth asking. Thanks!!!

Does anyone know, or tried to fit the GM accessories bedside box (2021-2022 trucks) into a 2018, 6.6 ft bed? It is GM p/n 84705351. Pick is from the GMAC website from a T1 truck.

Awesome.....thank you !!

Anyone have experience with how well Plastidip'ed emblems/badges hold up to, say, car washes (pressure washers) etc...??

Have a Picture? Might give people a better idea of what type of look you're going for. Sounds like you've already done quite a bit. Throw in some aftermarket seat warmers, maybe??

I imagine he is used Rigid Ignite Flush Mount pods.....that's about the only size of Rigid LED light that will fit in there. I attached a pic of what one looks like.

No prob! I checked over the drawing and it looked right (assuming you get typical automotive relays). But if you have questions, feel welcome to shoot me a PM message. A guy on here, Phil, with screenname "Pgamboa" is also VERY good with automotive wiring. Could shoot him a message too.