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Plow won't move! Help please

Discussion in 'Truck & Equipment Repair' started by kjacobs, Aug 29, 2016.

  1. kjacobs

    kjacobs Junior Member
    Messages: 20

    1997 f350 7.3l diesel . Have a 8 ft ss fisher straight blade 3 plug with isolation module. After sitting for 3 months while having a bunch of work done on the truck. Went to move plow and nothing no movement at all no noise . No plow lights nothing. Joystick lights up. Swapped joysticks with a new one still nothing. All pins are intack and greased at grill. All grounds and connections at soliniod are cleaned and dielectric greased. Hooked up jumper cables to pump and truck and pump made plow jerk. I'm at a loss and really can't afford to keep throwing parts at it. I'm also very new to plows and extremely new to anything electrical. Any help greatly appreciated .
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,924

    Double check all the plow fuses first.
    Is the positive and ground for the plow tightened at the battery?

    What was done to the truck?
     
  3. kjacobs

    kjacobs Junior Member
    Messages: 20

    How many fuses are there? I found 2 or 3 at the isolation module? All wires are as tight as I can get them I re tightened the wires at the battery and solinoids. Replaced the fenders,rocker pannels.
     
  4. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,924

    Either 3_4
    Double check your solenoid wiring, if you didn't put it back properly, your not getting power
     
  5. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,908

    Get a wiring diagram, you didn't connect a power, or a ground when you put it together.
     
  6. kjacobs

    kjacobs Junior Member
    Messages: 20

    Where would I get a diagram? Every possible wire is hooked up. I even tried switching things around couple different ways
     
  7. kjacobs

    kjacobs Junior Member
    Messages: 20

  8. kjacobs

    kjacobs Junior Member
    Messages: 20

    This is how it's hooked up. Top big red wire goes to positive battery terminal.
     
  9. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,908

    Go to the western web site. It's all there in documents. Go to parts and service, then service publications library. I think your missing the small ground on the solenoid relay.
     
  10. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,570

    Short the two large terminals on solenoid with screwdriver, stay away from the plow. Does plow motor run? Yes, check for signal at solenoid with test light. No power at signal you have wiring issue. Do have power replace solenoid. Motor does not run when sorting terminals and you do have power at signal wire test for power at the motor. No power, connection issue. Have power at motor, motor is shot. Pretty easy to troubleshoot with a test light, just follow the power from battery to plow.
     
    Philbilly2 likes this.
  11. kjacobs

    kjacobs Junior Member
    Messages: 20

    Where does the small ground attach to? The inner fender?
     
  12. kjacobs

    kjacobs Junior Member
    Messages: 20

    Also 2 questions looking at all the wireing scamadics online show the 2 big red wires In oposit positions then where I have them would this make any difference? Second questions is I have a small red/green wire attached on the top post with the big red wire but none of the diagrams show that wire anywhere?
     
  13. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,908

    Do you have a test light, and know how to use it? On the motor relay, on the small terminals, what color wires are on those? Take a clean pictures of that. Not from the side.
     
    Bchsnow likes this.
  14. kjacobs

    kjacobs Junior Member
    Messages: 20

    I do not have a test light and not sure how to use one. Here's a cleaner picture they are red/brown orange/black
     
  15. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,924

    Here it is

    Screenshot_2016-08-29-16-31-55.png
     
  16. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,924

    The blk/og is ground.
     
  17. kjacobs

    kjacobs Junior Member
    Messages: 20

    . This site won't let me upload a picture says file too big so I will try to explain best I can I will start with small terminals one wire is red/brown other wire looks orange/black but it's faded and has yellow on it aswell. There's another orange/black wire that runs from the negitive battery cable and into the harness connected to the soliniod it loops back in and runs over to the drivers side? The top big terminal has a big red wire that runs to the positive battery cable and there's a red/green wire attached to the top big terminal as well. Bottom big terminal has a big red wire that runs to the grill plug. I hope this makes sence to somone
     
  18. kjacobs

    kjacobs Junior Member
    Messages: 20

    No one has this plow setup and can snap a pic of how there wired? That wire scamatic above is like reading Spanish to a guy like me that has no clue about anything electrical? Really not sure what I have backwards here but no wires were removed while truck was being worked on so everything is attached but must be backwards I tried switching things around on the soliniod couple weeks back still nothing
     
  19. Randall Ave

    Randall Ave PlowSite.com Addict
    Messages: 1,908

    I'm not busting here. If you cannot use a test light. Get someone who can. Look at the diagram Dieselss posted. It's all there.
     
    k1768 likes this.
  20. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,924

    Where is the plow ground wire hooked up?
    The 4g black?
    Did you remove the battery(s) while doing the repairs?