Stereo Constantly on

Discussion in 'Trucking Electronics, Gadgets and Software Forum' started by BurjKhalifa, Jul 6, 2024.

  1. BurjKhalifa

    BurjKhalifa Bobtail Member

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    Hi, I have a 2000 peterbilt 37 ,it came with an aftermarket stereo and never turned off , I upgraded it anyways and assumed it was yellow and red wire together, but upon installing the new one, i wired red with red , and yellow with yellow i noticed that the stereo stays on with the key off. The red wire seems to have constant power while it should be ignition only

    It looks like no splices in the original harness now im stuck.
    Anyone know where to look?
     

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  3. RockinChair

    RockinChair Road Train Member

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    Since the stereo works with the key off and the CB doesn't but you want it on all the time, maybe you could switch the wiring at the fuse/relay box.
     
  4. Lazer

    Lazer Road Train Member

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    The radio itself does not have a ‘power button’ or on/off, somewhere?
     
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  5. Ridgeline

    Ridgeline Road Train Member

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    Did you check these two with a volt meter before putting it in the slot?
     
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  6. BurjKhalifa

    BurjKhalifa Bobtail Member

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    Nov 22, 2023
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    nope, constantly , checked red wire ignition wire for it and its constant 12v
     
  7. BurjKhalifa

    BurjKhalifa Bobtail Member

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    Nov 22, 2023
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    I checked it , red has constant 12v , and at the fuse box by feet the radio has no power. im assuming its spliced somewhere.
    My idea was to run a fuse tap to the circuit breaker instead. what do you think?
     
  8. BurjKhalifa

    BurjKhalifa Bobtail Member

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    ok guys, so i removed random fuses and found that when i remove the "AUX FAN" fuse the stereo does turn off, so how do i proceed from there?
     
  9. skallagrime

    skallagrime Road Train Member

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    Why is this undesireable?
    Lotta time if im sitting with truck off i still want my radio on.

    Got so i normally splice yellow and red
    If you get real fancy and like me also really dont like the radio turning off every time you start the truck (disconnects radio, ande therefore bluetooth on crank), run new direct wire to headunit from house batteries, (fuse your positive at the battery in a weatherprotected inline fuse)

    If worried about parasitic draw, either remove headunit face on parking for a while, or add a dash mounted switch to kill power
     
  10. BurjKhalifa

    BurjKhalifa Bobtail Member

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    Alrighthy guys, i just fuse tapped into the wiper blades, and i now have apple car play :D. thanks everyone IMG_0128.JPG IMG_0129.JPG
     
  11. The one california kid

    The one california kid Medium Load Member

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    He wouldn't have to switch, he could run a jumper wire off the red to his cb. I'm confused as to why it's a problem to have access to the stereo while the key is off? I ran mine that way, along with ,2 small amps straight to the batteries as well as a flat mini powered sub and played it all the time with key off and never had no problems starting the truck.
     
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