In specific, 2004 Venture.
Friend of mine had his stereo go out, so he bought an aftermarket replacement. He was unable to get it working, so he brought it over for me to look at.
He's a younger guy, so he didn't know about or buy an adapter harness - he was just cutting wires off of the OEM harness and splicing them onto the harness that came with the stereo. He nailed the speakers but he wasn't able to get the power to come on.
It seems like Chevy has done something weird, and it seems to be related to the "radio stays on until the driver's door is opened" thing.
I got it to work for the time being by identifying the 12V output from the battery and tying the stereo into that. The drawback of course is that it's always on now unless he powers it off. I don't think the clock should drain it down too fast, but who knows.
I've basically just got this one wire on the new radio's harness that I can't identify where it needs to go. See here:
View attachment 53083
So, PowerB+ and GND- are self-explanatory. We're not using ANT+ as he has a fixed antenna. I'm just not entirely sure what "ACC+" is supposed to be. I assume it's a 12V signal from the car that says, "radio on" because if I hit it with 12V the radio will stay on until I pull the 12V off that wire. But finding it on the Chevy side is the tricky part. I'm striking out Googling harness diagrams. Any ideas?
Friend of mine had his stereo go out, so he bought an aftermarket replacement. He was unable to get it working, so he brought it over for me to look at.
He's a younger guy, so he didn't know about or buy an adapter harness - he was just cutting wires off of the OEM harness and splicing them onto the harness that came with the stereo. He nailed the speakers but he wasn't able to get the power to come on.
It seems like Chevy has done something weird, and it seems to be related to the "radio stays on until the driver's door is opened" thing.
I got it to work for the time being by identifying the 12V output from the battery and tying the stereo into that. The drawback of course is that it's always on now unless he powers it off. I don't think the clock should drain it down too fast, but who knows.
I've basically just got this one wire on the new radio's harness that I can't identify where it needs to go. See here:
View attachment 53083
So, PowerB+ and GND- are self-explanatory. We're not using ANT+ as he has a fixed antenna. I'm just not entirely sure what "ACC+" is supposed to be. I assume it's a 12V signal from the car that says, "radio on" because if I hit it with 12V the radio will stay on until I pull the 12V off that wire. But finding it on the Chevy side is the tricky part. I'm striking out Googling harness diagrams. Any ideas?
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