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Tractor Talk Discussion Forum

B FARMALL WIRING

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ANDREW of SNOW

08-07-2006 14:23:01




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VOLTAGE REGULATOR HAS 4 TERMINALS "L" "F" "BAT" "GEN"
LIGHT SWITCH HAS 4 POSITIONS "L" "H" "D" "B"
I PUT F TERMNIAL ON REG.TO F TERMINAL ON GEN. I PUT GEN. TERMINAL ON REG. TO " A" TERMINAL ON GEN. I PUT BAT. TERMINAL ON REG.TO AMP GAUGE. I DONT KNOW WHERE "L" TERMINAL GOES FROM REG.




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Bob

08-07-2006 17:25:23




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 Re: B FARMALL WIRING in reply to ANDREW of SNOW HILL N.C., 08-07-2006 14:23:01  
If the link below doesn't work, cut and paste this link into your browser for a factory wiring diagram:

Link


Legend for Key #'s...

Link

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John T

08-07-2006 14:46:22




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 Re: B FARMALL WIRING in reply to ANDREW of SNOW HILL N.C., 08-07-2006 14:23:01  
Andrew, When using a 4 pole VR with the (L)oad terminal, the L terminal is what feeds hot battery voltage to all the loads such as lights and igition via the BAT input terminal on those switches. On a 3 pole VR that doesnt have the extra 4th L terminal, those loads are fed voltage from the ammeters Load terminal, being the same ammeter terminal that wires down to the BAT terminal on the VR. Sooooo o the ammeters load terminal wires to the BAT terminal on that VR and then a wire from its L terminal is what feeds input voltage to lights and ignition switch(es). Its possible to make a 3 pole VR work in place of a 4 or vice versa, its just a matter of where loads like lights n ignition receive their voltage from, the load side of the ammeter on a 3 pole VR system but the L terminal on the 4 pole VR system.

To answer your question, the L terminal wires up to the dash to power up the switches (lights and/or ignition) on their BAT input terminals.

John T

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K-Mo

08-07-2006 14:40:19




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 Re: B FARMALL WIRING in reply to ANDREW of SNOW HILL N.C., 08-07-2006 14:23:01  
Your light switch is for using a generator with a cut-out relay. The "L" & "H" function would connect to the "F" terminal of the generator for choosing a High or Low charging rate. Since you have a regulator installed you can use the "L" terminal to power the headlights. This will provide additional generator output when the lights are on. You will not be using the "L" & "H" function of the light switch. You will still use the "B" (bright) & "D" (dim) for the headlights.

K-Mo

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