190 Allis key switch location of proper color on it

[16840138]

I have an Allis 190 tractor and I need to know the color of wire that is attached to the key switch. The own that is in it is 5 terminal switch. I had a hydraulic hose burst on the steering unit under the steering wheel. In my attempt to troubleshoot the hydraulic leak, I removed the key switch and it has a broken terminal. I have tried looking in the parts manual and online. There is a heavy white wire that has power but when I turn the key; it starts . before I had to use push button. There are 2 yellow wires.
Now I am asking for help from the forum. Thank you John

 

[DrAllis]

The key switch should have some letters scribed on it for each terminal. Heavy red wire from the ammeter to the "B" (battery) terminal on the key switch. This is constant 12 volts to the key switch. Heavy white wire from the push button starter switch to the key switch probably labeled "I" for ignition. There aren't any yellow wires from the factory. You've got to get the heavy red "BATT" wire in the correct place first. The heavy white wire has no power until it somehow gets connected to the heavy red wire from the ammeter via the key switch.

 

[16840138]

I have wires going everywhere. Would you please direct me to where all the wires go. the red wire from amp is hot. then it is all know. the problem is for 3 pole key switch is not what I have, mine is a 5pole switch

 

[DrAllis]

5-post key switch is for a diesel tractor, which has a manifold heater position on the switch. I thought 1 or 2 of those posts were just a "double" post for a second place to connect to the same function ? With all wires disconnected on the back of the key switch, do the following. Find the key switch post that says BATT or B. Connect the heavy red wire from the ammeter to that BATT or B post. Now, with the key switch turned ON, hold down the clutch pedal and push the starter button at the same time and hold it. Take the heavy white wire and strike each and every other switch post until the starter engages. That is where the heavy white wire should go. Maybe it will take 2 people to do this.

 

[big orange]

Do you have a operators manual? Some of them have the wiring schematic.

 

[Jim.ME]

Do you have a operators manual? Some of them have the wiring schematic.

He posted a picture of the wiring diagram he has in post 3.

 

[16840138]

THANK YOU JOHN