7-Pin Pinout on Workmaster 120

   / 7-Pin Pinout on Workmaster 120 #1  
Joined
Jun 30, 2023
Messages
46
Tractor
New Holland Workmaster 120 (decoration?), Massey Ferguson 135 (does all the hay work)
I have a sprayer I would like to connect to my WM120. Unfortunately, the pinout I was given is not working for me. I ended up blowing a fuse (and hopefully not also the relay) tinkering around with stuff (bad multimeter connection, fixed) but now that things are connected correctly on the meter and a new fuse is in I am not getting voltage on what the diagram below says are the correct pins (ground/white, +12V/black). Wondering if there's a different pinout for the New Holland tractors than what is shown. All I need is +12V to my sprayer pump, and I had wanted to use the 7-pin connector to supply that so that I can avoid running wires to the battery, etc. I prefer short, sweet cable runs.

Any idea if the NH pinout is different than shown? I do not have a diagram in my owner's manual and am not sure the below is trustworthy. Not a fan of blowing fuses. Thanks for any helpful replies.

qu25613_800.jpg
 
   / 7-Pin Pinout on Workmaster 120
  • Thread Starter
#3  
Do not use a vehicle diagram. You want agriculture. Here is a link.

Thank you very much. I'll go out and have a look at this later today and see if it helps. Looks like either pin 7 or 4 would be appropriate.

I don't know why New Holland couldn't include a pinout picture in the manual... Giving pin numbers with no picture is pretty useless. <haha>
 
   / 7-Pin Pinout on Workmaster 120 #4  
Nobody does unless you get the tech manual then there’s a better chance you’ll have a diagram however I gave a NH and there is no diagram for what wire goes on the flasher button. Was a guessing game. Never did get it correct but it works. Calling NH yielded same results as what was in tech manual
 
   / 7-Pin Pinout on Workmaster 120
  • Thread Starter
#5  
Do not use a vehicle diagram. You want agriculture. Here is a link.

Solved the problem. Thank you! Not sure but it seems the polarity is reversed (multitester showing a negative voltage with black wire on the ground pin (top pin) and red wire on the center pin. The bottom pin (#4 in the diagram at the link above) seems to be not connected.
 

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