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1977 peterbilt 379 repair manual?

Discussion in 'Peterbilt Forum' started by vinijackson, Sep 15, 2011.

Page 2 of 2
  1. Sep 21, 2011 #11
    vinijackson

    vinijackson Bobtail Member

    30
    0
    Sep 11, 2011
    Williston Vermont
    0
    The year is right the model may be a 359? Vin # 89251N
     
    vinijackson, Sep 21, 2011
    vinijackson, Sep 21, 2011
    #11
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  3. Sep 21, 2011 #12
    mslashbar

    mslashbar Medium Load Member

    599
    802
    Jul 22, 2009
    elizabeth,co
    0
    Call any Peterbilt dealer with the vin number and they should be able to tell you everything about the truck.
     
    mslashbar, Sep 21, 2011
    mslashbar, Sep 21, 2011
    #12
  4. Sep 22, 2011 #13
    blackpipes

    blackpipes Light Load Member

    61
    18
    May 4, 2010
    king ferry,ny
    0
    Im sure its a 359 as long as its a conventional and has regular front fenders not square steel ones. 379 came out in 87 by the way.
     
    blackpipes, Sep 22, 2011
    blackpipes, Sep 22, 2011
    #13
    jr-transport Thanks this.
  5. Nov 8, 2011 #14
    vinijackson

    vinijackson Bobtail Member

    30
    0
    Sep 11, 2011
    Williston Vermont
    0
    I think I have it figured out... I have a 1977 359 .... C346 is stamped into the valve cover so I am thinking it's a 3406C ? Great truck I love it though I don't know much about it. Bobtailed for 5 or 6 hours recently and seems to run great...for what that's worth. Now I will start going through the truck and seeing what I find. Good thing I am not afraid of doing what ever work it needs myself with the help of a good book from ebay like you folks suggested.
     
    vinijackson, Nov 8, 2011
    vinijackson, Nov 8, 2011
    #14
  6. Dec 17, 2018 #16
    bobby38462

    bobby38462 Bobtail Member

    1
    0
    Dec 17, 2018
    0
    hey question..i have beeen working on a 1989 Peterbilt 379,the brake switch down under the petal beside the firewall,does anyone have the wiring diagrams for it or schematics,cause there was someone that bypassed the switch and put the brake lights ona toggle switch ?i recently changed the switch and they have the wiring all messed up on it,can someone help ?
     
    bobby38462, Dec 17, 2018
    bobby38462, Dec 17, 2018
    #16
  7. Dec 18, 2018 #16
    RocketScott

    RocketScott Medium Load Member

    579
    946
    Apr 10, 2013
    Kentucky
    0
    Super Miller has the wiring diagrams:
    Supermiller – Class 8 Trucks

    SK19517 and SK18250 are what you want. Can't remember what those are listed under, there are several for the 379

    For the brake switch you need power to the switch from the circuit breaker on wire #3

    Wires 279 and 281 connect to the other side of the switch and take it from there. 279 goes to the trailer, 281 is for the truck but the wiring diagram doesn't show it past the pass through connector on the firewall.
     
    RocketScott, Dec 18, 2018
    RocketScott, Dec 18, 2018
    #16
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