Need help with radio wiring

Discussion in 'GMC Truck Forum' started by THE KiiDD, Aug 17, 2013.

  1. THE KiiDD

    THE KiiDD Full Member

    Joined:
    Aug 10, 2013
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    Apprenticed carpenter for Ledlie Construction
    Location:
    ONTARIO EH!
    In my '01 Sierra I have a Pioneer DEH 24UB head unit, but the donkey that I bought the truck from didn't know his a** from a hole in the ground and by the picture you can see he has the ground (black) to the dimmer (grey).
    I have some know how when it comes to wiring but i'v tried to fix this and only end up blowing fuses.

    From this picture can someone tell me which wires go to which. Chevychase posted the truck wire diagram which helps but now the radio side I'm stuck on.

    [​IMG]


    Here is the mess in the truck now

    [​IMG]

    Looks like his goal was to just get power and sound and screw everything else. I have literally no dash lights whats so ever at night. Just the little orange light for when A/C is on :D and try to explain to a cop why the dash lights aren't on when you go through a RIDE boy oh boy!

    Hope someone can help :)

    - Brandon
     
  2. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    Oh what a tangled web we weave...this is about all i have for this.

    2001 GMC Sierra C1500 Audio Wiring Schematic

    Car Radio Battery Constant 12v+ Wire: Orange
    Car Radio Accessory Switched 12v+ Wire: Yellow
    Car Radio Ground Wire: Black/White
    Car Radio Illumination Wire: Brown
    Car Stereo Dimmer Wire: Gray
    Car Stereo Antenna Trigger Wire: N/A
    Car Stereo Amp Trigger Wire: N/A
    Car Stereo Amplifier Location: N/A
    Car Audio Front Speakers Size: N/A
    Car Audio Front Speakers Location: N/A
    Left Front Speaker Positive Wire (+): Tan
    Left Front Speaker Negative Wire (-): Gray
    Right Front Speaker Positive Wire (+): Light Green
    Right Front Speaker Negative Wire (-): Dark Green
    Car Audio Rear Speakers Size: N/A
    Car Audio Rear Speakers Location: N/A
    Left Rear Speaker Positive Wire (+): Brown
    Left Rear Speaker Negative Wire (-): Yellow
    Right Rear Speaker Positive Wire (+): Dark Blue
    Right Rear Speaker Negative Wire (-): Light Blue
     
  3. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    One gray to left front speaker probably smaller wire...other goes to stereo dimmer . Is not your stereo/head unit labeled any?
    Ground blk/wht will go to black ground on unit? Let me see if i can find some info on your unit..if i find will post.
     
  4. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    Is this the wiring layout on yours ? If so just use both i left and match up. If not yours let me know.
    Red - 12 V Ignition/switched (+)

    Black - (-)

    Blue - Power antenna, or amp remote.

    Yellow - Constant hot 12 V (+)

    Speakers:

    White - LF speaker +
    White/Black - LF speaker -

    Gray - RF speaker +
    Gray/Black - RF speaker -

    Green - LR speaker +
    Green/Black - LR speaker -

    Purple - RR speaker +Purple/Black - RR speaker -
     
  5. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    Okay i was fused a little on the dark green wire in pic.
    You have the dark green to red..this is right.
    Orange to yellow right. But on the wires for light illumination ..if your wiring on unit is like i left....you don,t have right setup for brown wire and gray wire for lights. He should of bought a wire harness/connector ..plug and play for this.
     
  6. THE KiiDD

    THE KiiDD Full Member

    Joined:
    Aug 10, 2013
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    Apprenticed carpenter for Ledlie Construction
    Location:
    ONTARIO EH!
    Thank for the info Chase, yeah for like $25 he could of had a plug and play harness.
    I did some messing around, put the ground to ground and gray speaker wire to gray speaker wire and left the thick gray and capped it. Turned the key and all the lights i'v never had came on :D

    My unit has a Yellow, Red, Black and blue/white auto antenna wire, no dimmer wire then 8 speaker wires.
     
  7. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    Yup may have too..get factory plug for your truck...junk yard chevy should work also..then get the plug and play to fix this.
    Could try till you fix ..run power to brown wire see if lights come on..toggle switch these ??
    Would not worry about gray dimmer till you get right setup.
    Might need to check fuses ..now may have blown from switching wires.
     
  8. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    Okay looking at schematic /diagram i left annd this one for lights gray wire power for lights ...so tie gray and brown together should get lights .

    Look at these two diagrams will see this. [​IMG]

    [​IMG]
     
  9. chevychase

    chevychase Semi-Admin
    Staff Member

    Joined:
    Oct 15, 2010
    Messages:
    22,489
    Likes Received:
    13,327
    Trophy Points:
    113
    Occupation:
    SELF EMPLOYED
    Location:
    truck forum .org
    bump bump bump.........
     
  10. dirtrider73068

    dirtrider73068 Senior Moderator
    Staff Member

    Joined:
    Jul 14, 2011
    Messages:
    7,106
    Likes Received:
    4,587
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    sales associate
    Location:
    Central Oklahoma
    Speaker wireing is easy colors will be different on the truck than what on the head unit, but there will be sets of 2 wire for each speaker a + and - most wires on units are the striped wire is - the solid color is + so a gray wire is + and the gray with white strip is - hope this will help, lets gray is front left, and green is front right, as a example. What I would do when I found a hack job is take the head unit, use the fader and balance and go one set of wires at a time and one speaker at a time to match the speaker to the head unit fade and balance till I had the FR FL RR RL set up, black is ground, red is postive constant power for memory and could be orange for key on it turns the head unit on, blue is either amp or power antenna. Once you find out what wires go to what speakers and there colors match them to the diagram for the truck factory wire colors and it should be working right.

    You were blowing fuses from shorting to ground, which you were touching + to a ground source and thus pop a fuse kinda like short across a battery.
     

Share This Page