
Light bar options
Hello everyone, so I recently bought my 2024 blazer ev lt. I'm loving it so far and I don't regret my decision, got a great deal on it, but I do wish it had the center led bar like the RS and SS models. I personally like that a lot and so I found out that I could buy it and maybe install it. But I'm not expecting it to be easy, from the research I've done, these are my options:
1- Best-case OEM retrofit — plug into existing hidden wiring
If my LT happens to have the unused factory connector behind the center trim (highly doubt it) I could install the RS/SS light bar and potentially just need GM programming/configuration to activate it. This would be the cleanest solution and give me factory behavior.
2- OEM-style wiring retrofit — add the missing RS/SS wiring
If there’s no connector, I could install the light bar, obtain the correct 15-pin pigtail, and add the necessary wiring between the lamp and the Blazer’s lighting-control system. Depending on how GM configured the LT, this may also require programming. This is more involved but could still behave exactly like factory.
3- Standalone/custom harness — probably the most practical fallback
If the LT’s modules simply can’t control the RS/SS light, I could run the center bar from its own fused 12-V circuit and use one of the existing DRLs/parking lights only as a low-current trigger for a relay/controller. The result would basically be:
Blazer DRLs turn on → controller sees the signal → center bar turns on.
That avoids putting the extra electrical load directly on the factory DRL wiring.
I haven't done anything yet, I'm still doing research and thinking about it, but I thought I'd bring it up on here and see if maybe by any chance anyone has done something similar or has any suggestions.