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  1. #1
    New Member
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    Ontario, Canada
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    Cub Cadet GT2554

    Default Apparent dead short in wiring, kills tractor

    Hi folks,
    I have a 2005 GT2554 that up until now has been a great tractor. This electrical issue blows the 25amp fuse in the fuse holder that is connected to a red wire and a red wire with white stripe wire the instant the key is turned on. I have gone through and disconnected most of the easy to access wiring connectors that have red wires connected to them to attempt to isolate the area that the short/problem may be in,( disconnect the connector, turn on the key and pop goes the fuse) I believe I have ruled out anything in the engine area. At first I suspected the key switch, but I am not so sure - I put a jumper across the red and red/white stripe at the key switch connector and the fuse blew as well. I am at a loss here. Short of removing the wiring harness to view every inch of it does, any one have any suggestions? I have just got it tore appart to get easy access to the back up safety interlock and the brake pedal interlock and I am running low on fuses!! Thanks in advance for any help!!

  2. #2
    Platinum Member OldMachinist's Avatar
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    May 2006
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    Southwest Illinois

    Default Re: Apparent dead short in wiring, kills tractor

    Have you pulled the three wire connector off the regulator/rectifier on the engine. After that one start pulling the connectors off the dashboard stuff one at a time. Here are some wiring diagrams that should help.

    Apparent dead short in wiring, kills tractor-gt2554_kohler_wiring.jpgApparent dead short in wiring, kills tractor-gt2554_kohler_wiring_legend.jpg
    2006 Cub Cadet Z-Force50
    2000 John Deere LX178
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

  3. #3
    New Member
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    Jul 2013
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    Location
    Ontario, Canada
    Tractor
    Cub Cadet GT2554

    Default Re: Apparent dead short in wiring, kills tractor

    Thanks for the diagrams. They may provide some assistance. On my model there is a 5 wire connector pin that that leads in under the motor tin work. I suspect this connects to the ignition / magneto parts that are typically clustered under the flywheel. I have disconnected this connector and the fuse still blows. My ignition switch has a 7 wire connector. My system has 2 - 25amp and 1 - 5 amp flat type automotive fuses. It has been suggested that there is a solenoid in the carburator that could be suspect. The voltage regulator has been also suggested as a problem. I am not a highly experienced small engine guy, but I have had a few apart to make repairs. Is the voltage regulator located under the engine cowling?

  4. #4
    Platinum Member OldMachinist's Avatar
    Join Date
    May 2006
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    617
    Location
    Southwest Illinois

    Default Re: Apparent dead short in wiring, kills tractor

    What engine does your machine have?
    2006 Cub Cadet Z-Force50
    2000 John Deere LX178
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

  5. #5
    Platinum Member
    Join Date
    Mar 2008
    Posts
    590

    Default Re: Apparent dead short in wiring, kills tractor

    Quote Originally Posted by hophornbeam View Post
    It has been suggested that there is a solenoid in the carburator that could be suspect.
    That is the carb afterfire solenoid - usually located on the side/underside of the carb body and will have one or two wires leading into it. Disconnect to isolate for testing for possible short in solenoid body.
    Another thought - prob may be the ignition sw itself......

  6. #6
    Platinum Member savageactor7's Avatar
    Join Date
    Sep 2008
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    Location
    CNY

    Default Re: Apparent dead short in wiring, kills tractor

    Traced a fuse blowing episode on our 2550 to the lights. Hope you can find your short quickly.
    Kubota B1750 with chains on all 4 turf tires. CC1440 & GT2550

  7. #7
    New Member
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    Ontario, Canada
    Tractor
    Cub Cadet GT2554

    Default Re: Apparent dead short in wiring, kills tractor

    OldMachinist, thanks. the engine is a Kohler Command 23, CH23S.

    rcbe, I can hear the carb solenoid actuating and I did consider the switch as a problem.

    savageactor7. I don't believe this is going to be an easy find.

    I located and disconnected the 3 wire connector as suggested by OldMachinist. No fuse blew when it was disconnected, reconnected a couple of times and blew a fuse. So then I removed it, tested between the terminals a found a complete circuit between one of the outside terminals and the centre terminal. At that point figured it was shorted out. Reconnected it to the wires for curiosity and no fuses blew. Reinstalled the **** thing and have just finished cutting grass for an hour and a half. %$%$@%%@%@%$@%$@!!!!! I found no obvious frayed or worn wires.

  8. #8
    Platinum Member OldMachinist's Avatar
    Join Date
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    Southwest Illinois

    Default Re: Apparent dead short in wiring, kills tractor

    The three wire connector is on the regulator/rectifier. The 2 outer wires go to the stator windings(alternator) and the center terminal charges the battery. The wire on the center terminal is likely violet color and is connected somewhere into the 12+ side of the system. If the center terminal on the regulator showed shorted to one of the stator terminal the regulator is bad or going bad.
    2006 Cub Cadet Z-Force50
    2000 John Deere LX178
    1974 SearsGT18 with 3 point,48"deck,Haban sickle mower and front dozer blade

    2000 Bobcat 453F with steel tracks
    1954 Ford860 with front end loader, 5' brushhog
    1952 Allis Chalmers CA with Woods L59 mower
    1947 Case SC
    1998 Honda ACTY 4WD mini truck
    And too many other small engine tools to list

  9. #9
    New Member
    Join Date
    Jul 2013
    Posts
    21
    Location
    Ontario, Canada
    Tractor
    Cub Cadet GT2554

    Default Re: Apparent dead short in wiring, kills tractor

    OldMachinist, that is good information to know. I suspect your assessment is correct. I will have to get a regulator on order to have when the next round of issues start.

  10. #10
    New Member
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    Jul 2013
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    Location
    Ontario, Canada
    Tractor
    Cub Cadet GT2554

    Default Re: Apparent dead short in wiring, kills tractor

    An update for those that are interested.
    I believe I found the cause of my short problems quite by chance as it turns out. The power wire leading to the head lights had rubbed on the sharp corner the muffler shielding steel. I had the hood up in a shady spot looking for the source of another vibration and noticed a very small arcing between the wire and the shielding.
    While did I not realise this earlier you say?? Well the plastic crap head light bulb holders had broken allowing the bulbs to vibrate too much and they were burned out.
    Thanks to those that offered opinions. I believe one did say to isolate the lighting system.
    Last edited by hophornbeam; 08-26-2013 at 07:56 AM. Reason: misplaced word correction

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