Ignition Switch problem

   / Ignition Switch problem #1  

ualjack

Member
Joined
Jun 7, 2005
Messages
31
Location
Granby CT.
Tractor
DK40
I know there have been many posts about this but here goes. My ignition switch (2nd one by the way) was not staying engaged and the tractor would die. I took the switch apart and cleaned it and reinstalled. now all detents of key clicked firmly but would not start. disassembled switch again checked each position with a meter to make sure they all had positive contact and reinstalled. now nothing turns on. checked all fuses and main 60a fuse, all good rang through with a meter. cleaned main ground wire from batt. to frame again. checked power at main 60a fuse and starter both 12.8 volts. I have no power at the connector with the ignition switch removed on any terminal. lights and hazard lights will not turn on. I have both a service manual and parts manual and service manual mentions a fusible link which I suspect but can not locate it in either manual. ??????? any ideas? the hazard lights should at leat be direct to the hot battery and I have absolutely nothing now. the wiring diagram in the service manual I bought is not very detailed.
 
   / Ignition Switch problem #2  
Can help much but for finding the fuse-able link look for a wire with a few folds in it taped up . ( chances are it's a red wire) What I've done in the past it cut them out and installed an inline fuse provided that's the problem.
Since there's no power to the switch follow the feed wire it should have the fuse.
 
Last edited:
   / Ignition Switch problem #3  
Usually, fusible links are located where they won't damage other wire or parts if/when they glow and go up in smoke. Typically at the starter, power junction block and/or alternator. It would be an exceptionally poor design to have one within a wiring harness. They should be standalone and feel soft and flexible.

As far as the switch not working after you took it apart.... :confused3:
 
   / Ignition Switch problem #4  
If all the contacts on the connector that feeds the switch are "cold" (no volts) but there is voltage at the starter then the 60 amp slo-blo fuse is almost certainly blown (or you have a wiring problem). That particular fuse is normally taped to the wire bundle near the starter, so you'll have to unwrap the tape to get to it. Most of the time fuses blow for a reason. So if you find that fuse blown, get more than one replacement.

By the way, what version of the DK45 do you have: original (like pre 2005) DK45, DK45s, or DK45se?
 
   / Ignition Switch problem
  • Thread Starter
#5  
I have a 2003 DK 40. No fuses are blown. power to the starter and at the main fuse. is the fusible link going from the starter control wire to the relay or past that and up behind the instrument console?
 
   / Ignition Switch problem #7  
I have a 2003 DK 40. No fuses are blown. power to the starter and at the main fuse. is the fusible link going from the starter control wire to the relay or past that and up behind the instrument console?

What is this main fuse?
 
   / Ignition Switch problem
  • Thread Starter
#8  
the 60 amp fuse with 2 wires running to it between the starter and alternator. mine is closer to the alternator.
 
   / Ignition Switch problem #9  
the 60 amp fuse with 2 wires running to it between the starter and alternator. mine is closer to the alternator.

OK. And you see 12v on both sides of that fuse?
 
   / Ignition Switch problem
  • Thread Starter
#10  
I have power at the 60 amp fuse. the wires from there to the instrument panel run inside plastic conduit from that point on. I was hoping to have an idea where the fusible link might be before I start tearing it all apart. ????
 

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