Ck weird electrical.

   / Ck weird electrical. #81  
I cannot believe this issue continues!?
What is the problem with tracing out one wire?
If it's not the problem you can move to other possibilities, in the meantime a voltage drop supposedly exists along that wire, and headlights won't light up with 3 volts.
Piercing the insulation to probe the wire along it's length is a proven method of troubleshooting and the pinpoint can be sealed with a dab of silicone or similar caulking.
The wire has already been described as possibly having insulation damage, internal break of strands, etc., so all those possibilities have been accounted for. I didn't want to complicate a simple wire trace by suggesting what James did; :)rolleyes:) replacing the wire between the two points; but now that it's on the table it might be easiest for you to do that than try to trace it out from point A to point B.
One thing that might be worth revisiting before doing either green wire option, is to disconnect and inspect and reconnect the underfloor connectors and look for any further signs of water, AND make sure no male pins are bent, missing, etc. And look for a green wire at those connectors and take a reading on BOTH sides of any green wires and see if the voltage is consistent from one side to the other. I would do this because you found the connectors full of water and solved your glow plug anomaly there, so it is still possible that is where the problem of the voltage drop is occurring.

CM out.
 
   / Ck weird electrical.
  • Thread Starter
#82  
It is definitely the green wire. I cut and ran a new line and the lights work fine. I may just leave it that way considering the green wire is wrapped and bundled with 50 more wires and winds thru the tractor. As simple as it sounds, logistically exposing the green wire all the way back to the fuse could be a nightmare.
 
   / Ck weird electrical. #84  
It is definitely the green wire. I cut and ran a new line and the lights work fine. I may just leave it that way considering the green wire is wrapped and bundled with 50 more wires and winds thru the tractor. As simple as it sounds, logistically exposing the green wire all the way back to the fuse could be a nightmare.

OK, I gather from this that you bypassed the green wire from output of the 20 amp fuse to the input of the twin relay's and all is well the lights work.. so there is something wrong with the green wire or one of its junctions. SO I guess we are done at this point Chris. I could not get the video to play. It has 0.00 minutes.
James K0UA
 
   / Ck weird electrical. #85  
Same here no vidio
 
   / Ck weird electrical.
  • Thread Starter
#86  
The best I can see there is no connectors between the fuse and relay. The green wire does not go thru those connectors under the floor. Running a new line is 100% safer than me digging thru a birds nest if wires all taped up in flexible conduit. Like another poster said, there could be more harm done.
The video just shows voltage. 12v at out put of fuse. Key off (0.2v) at relay. Key on (2.5v) at relay. Key on/light switch on (4.5v) at relay.
 
   / Ck weird electrical.
  • Thread Starter
#88  
James, Murph, CM, Mitch and the rest of you... Thanks so much for your help. Also, Kiotiken... Who added nothing worthwhile to this thread..... lol
 
   / Ck weird electrical. #89  
Interesting, of course according to the schematic the green wire should have battery voltage on it. (12 volts) at all times. it should not make any difference if the key switch or the light switch is on. It would have been intersting to see what the readings on the output of the fuse panel would be without the key and the light switch on. It should remain basicly unchanged at nominal battery voltage.. Noticed that you took those readings without the load of the twin relay and the lamps in the circuit. So those are free floating voltages. and of course should be 12 volts constantly. So the green wire is broken If you for sure have found that green wire at the fuse box, and the schematic is correct, or in other words the tractor is wired like the schematic says it is wired, the green wire is essentially open. the spurious voltages with out load are hard to explain, unless they are exactly that, Spurious voltages. Sometime digital high impedance volt meters can pickup stray ac voltages, and without any load on the circuit, perhaps that can explain it. But the green wire still looks to be open/broken. If it was mine, I would have to tear into it, and find out what is wrong. But if you have bypassed it and are back working and satisfied, then good enough..

James K0UA
 
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   / Ck weird electrical. #90  
James, Murph, CM, Mitch and the rest of you... Thanks so much for your help. Also, Kiotiken... Who added nothing worthwhile to this thread..... lol

LOL, I warned you I didn't even know how to hold a multimeter! Also, a whimpy horn is a big deal to some of us!
 

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