Mark Nafziger
New User
Anyone have wiring diagram for Farmall 806 diesel? It has alternator with one wire only. I have all new wiring harness for right, left and rear but can't get oil or alt lights to work
Thanks
Mark
Thanks
Mark
- Thread starter Mark Nafziger
- Start date
Bermuda Ken
Member
We have some IH wiring diagrams online, but nothing for the 1-wire conversion. Click the link to see them.
IH Wiring Diagrams
IH Wiring Diagrams
Bob M
Well-known Member
Mark - The alternator light will not work with a 1-wire alternator. (The purpose of one of the auxiliary wires on a 3-wire alternator is control the warning light). So if you want to keep an eye on the electrical system best to install a voltmeter in the dash.
The oil light should be straightforward. The circuit runs from a switched pole on the ignition switch (IGN or ACC) to the dash light then to the pressure switch.
To test, with the ignition "on" ground the terminal at the pressure switch. If the oil light comes on the pressure switch is bad. But if the light stays dark, problem is in the wiring or the dash lamp itself.
The oil light should be straightforward. The circuit runs from a switched pole on the ignition switch (IGN or ACC) to the dash light then to the pressure switch.
To test, with the ignition "on" ground the terminal at the pressure switch. If the oil light comes on the pressure switch is bad. But if the light stays dark, problem is in the wiring or the dash lamp itself.
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