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solenoid swap

Discussion in 'Fisher Engineering Discussion' started by joehinvt, Jan 14, 2016.

  1. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    Hi all! Changed out my semi new solenoid due to the motor staying running..I upgraded it to the fisher solenoid 5794k-1 as was recommended...BUT now when I operate my fishdtik and move the plow any way...side to side or up...My radio cuts out and my amp output on the dash drops! I checked my wires and all looks good! Is this solenoid different? Grounded positive or something crazy?? Plow still operates as it should but the ampps draw and radio nav unit cutting out scares me a little!

    The tall skinny solenoid to the right is what I replaced...The first picture is the one I'm trying to use per my parts guy....
    THANKS IN ADVANCE!!!!!! Joe H

    5794K-1-2.jpg

    solenoid 1.png
     
    Last edited: Jan 14, 2016
  2. Philbilly2

    Philbilly2 2000 Club Member
    Messages: 2,609

    The one you are installing is a better unit.

    As for grounding, they are the same.

    Can you post a picture of your new solenoid installed and wired.



    Do you have a multi-meter tester available?
     
  3. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    As you can see...I have replaced the main wire and I have the small red wire with it...I believe I have the two small wires correct...but since I don't have a schematic for this solenoid I "assumed " these are reversible? Meaning the two big wires can go either way but unsure about the two little ones. ...
     
  4. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    They both can go to either pole
    No.set pin for the wires.

    And no we can't see, no picture yet
     
  5. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    oops...here's the picture....lol

    20160114_104955_resized.jpg
     
  6. Philbilly2

    Philbilly2 2000 Club Member
    Messages: 2,609

    I can't remember at the moment, but for some reason I think there is typically 2 wires on the small ground lug (black and orange)?

    I believe that one goes into loom like yours shows and one goes directly from solenoid to the negative lug of battery.

    My trucks are all out right now for me to look at one. Might be wrong so someone correct me if I am wrong please. Thumbs Up

    I just remember from back in the day some of my older trucks, the solenoid was mounted to somewhere that was ground on the truck body or had a wire tagging it to ground.
     
  7. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    I'll go out and double check...But I only remember one wire on each....Plow worked fine with other solenoid other than motor staying engaged once in a while......I would tap the solenoid and it would stop instantly...
     
  8. Philbilly2

    Philbilly2 2000 Club Member
    Messages: 2,609

    Was your old solenoid mounted in the exact same location as the new one or is there a possibility that you had a better ground with the old solenoid?
     
  9. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    Same location...Oddly enough I went out and moved my truck just now and when I moved the plow the radio was fine,my amps dropped considerably but it acted and worked fine...Starting to wonder if maybe my battery is crapping out and I'm barking up the wrong tree! At idle my gauge is pushing 15 volts! `Way higher than normal......
     
  10. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    You need to get a batt and alternator test done.
     
  11. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    I run a parts store... LOL Trying to get out there with my tester to check it out but we are experiencing high volumes of pesky customers!!! lol Hopefully a straight forward fix! Thumbs Up :mechanic:
     
  12. flips87chevy

    flips87chevy Member
    Messages: 40

    Try grounding the base of the solenoid directly. Easy to test might as well.
     
  13. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    If it's a 4 pin solenoid it doesn't need to attached to metal. I've put quite a few in plastic parts and never had any issues.
     
  14. buddymanzpop

    buddymanzpop Senior Member
    Messages: 601

    Solenoid is wired correctly.
     
  15. flips87chevy

    flips87chevy Member
    Messages: 40

    My bad. I thought it had to be grounded.
     
  16. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    Ok all...Thanks for all the responses! I tested the battery and it being 9 years old...it tested bad! I replaced the battery with the best Interstate battery had to offer..Now everything works like it should...but the volt gauge on my dash still dips whenever I move the plow...Just not as much as with the old battery..Is this Normal? I never noticed when I installed the plow how much it dropped......Should have paid more attention............ lol Thanks again!
     
  17. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,972

    Voltage drop is normal
    Factory sweep gauges are never pinpoint accurate.
    If your that concerned, put a meter on it and see what the meter reads
     
  18. joehinvt

    joehinvt Member
    from 44004
    Messages: 35

    ok..Reassuring...Lol Thanks again!Thumbs Up
     
  19. Philbilly2

    Philbilly2 2000 Club Member
    Messages: 2,609

    Glad you got it figured!