Help on 2005 TrailBlazer


May 21, 2010
Stillman Valley, IL.
Hello Smart People'

I am installing a UHF2150A in my 2005 Chevy TrailBlazer. Does anybody have the wire colors for that vehicle or a link for them? I have the instuctions with the flasher unit.

Also, I would like to sync a LIN 3 and a LX-4. Is that possible?

Thanks Folks,


Lifetime VIP Donor
May 20, 2010
Hmm.. well, first lets "tackle" the Whelen HLF. Do you have a repair manual for your Trailblazer? If so, look up the wiring schematic in the electrical section. If that fails, you could trace the wires pretty easy from the headlight plug.

Now, for "syncing" the lights to the HLF, you could easily, just make sure you run a extra lead off each High beam wire, and make sure you put your LIN 3's/ LX4's into steady burn mode. I actually did that recently with a TLF, for LED LAW comparisons. (so they would all be on the exact same flash pattern)

If you need any more info, ask away. :)


May 21, 2010
Sacramento, CA
We have a few '06 TB's at work with 2150A's in them. If you need me to, I can pop the hood and see if I can trace the wires. I know the info is available online, but I can't remember which site.

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