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Discussion Starter · #1 ·
I am hardwiring a radio in my trailblazer I haven’t had one since I bought it, it was cut out . But upon doing so I’ve gotten it all hooked up through the instructions on this site but I cannot find the rear door speaker wires behind the dash all I have is the fronts. Anybody know where the rear wires could be ?
Electrical wiring Wire Cable Electric blue Technology
 

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Discussion Starter · #5 ·
That’s all of the wires that’s there , there should be dark blue ,light blue and brown,yellow. And mybad man this guy doesn’t shave his legs 😂 I’m 21 with a longer beard then most 40 yr olds
 

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'05 Chevy TB EXT
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The way GM wires all their vehicles in the past 30 years or so, will have all the possible circuits in the loom, running to the best exit-spot to service any/all accessories in that area.

I bet the wires that are somehow missing, are just tucked away and you aren't seeing them.

It's cheaper to have too many circuits than needing to add another one at the last moment to run something as simple as rear speakers when the vehicle gets to the final position on the assembly line.

Don't the speaker wires show up inside the rear door panels?
 

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Discussion Starter · #7 ·
Yes I put new doors speakers in all 4 doors it had all the 4 old non Bose speakers in and the radio was cut out when I bought it. The front speaker wires were there behind the dash and I got them hooked up and they work perfectly, but there’s no wires for the rears behind the dash but there was in the doors where I removed the old ones.
 

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I'd break their knees if I found someone had cut wires that they thought the car didn't need!

I can say this with pretty much 100% accuracy --- the wires were there.

Your job is to find them.
 

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Discussion Starter · #9 ·
It even has the black and blue like the Bose but I tried all of them and nothing made the rears work so it’s either tracking wires back from where the previous owner had a system in it I’m debating on the running new wires for the rear doors.
 

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Just curious. What did you use for the power wire? Since the original power wire is always hot which means your radio won't turn off when you turn your truck off. Or is there a jumper wire from the ignition wire?
 

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Discussion Starter · #12 ·
I know I used the constant 12v orange wire for right now for testing it but my radio does have a switch in it for on and off and it hasn’t drained the battery one bit since I installed it yesterday, but it is temporary since it all has to come back apart anyways I plan on running a fused link from the fuse box in the rear like in my other Tb or from ign.
 

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The sound system is supposed to stay ON when you turn the key off and it should stay on as long as you don't open the doors.

There is a Time-Out however ----- and eventually it will turn off the sound unit after X-minutes --- and I believe that value can be set on the upper-trim line vehicles.

Resist the urge to wire it to the ignition switch as that circuit goes directly to a bunch of electronimacal thingies that you don't wanna mess with nor take their job(s) away from them.
 
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