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6 Volt Field Control Light Switch

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Sanchez View Drop Down
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Joined: 01 Apr 2020
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sanchez Quote  Post ReplyReply Direct Link To This Post Topic: 6 Volt Field Control Light Switch
    Posted: 02 Mar 2024 at 10:35pm
My WD45 is running a fully functional 6 volt generator with a cutout relay and charge controlled by the resistor on the light switch. I’ve managed to break the resistor on the light switch while repairing the battery box. Instead of buying a new switch I’d like to replace the resistor . I believe I need a resistance of around 3 Ohms to charge at low rate, can I use a light bulb with a 3 ohm resistance in place of the resistor? Or is there too much juice flowing through the circuit for the bulb filament to handle? Another thought would be to use a rheostat to ground to make a variable charge control. I have one I can tune in this resistance range, but I don’t know if the field current would smoke the rheostat .
Electrons are not my strong suit, let me know what you think.
Cheers Richard
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PaulB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 03 Mar 2024 at 6:26am
The Brillman Co. has just the resistor. www.brillman.com ;  1-888-274-5562.  That's the first and only place I go to for anything electrical.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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JoeM(GA) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeM(GA) Quote  Post ReplyReply Direct Link To This Post Posted: 03 Mar 2024 at 6:40am
our own Steve of B &B Custom Circuits, Steiner Tractor Parts, DJS, Brillman all offer the resistor for your switch 

Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 03 Mar 2024 at 12:36pm
https://www.steinertractor.com/IHS950-Field-Resistor-on-light-switch



Like them all, but love the "B"s.
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 03 Mar 2024 at 6:04pm
Put the resistor in. Don't buy that aftermarket switch. It doesn't fit in any of the AC instrument panels without grounding itself out. If you need a whole switch, I think we're the only company that offers the OEM switch rebuilt/restored "that fits" on exchange or outright. If the switch is workin', just put a resistor in it and yer' good ta' go!
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Les Kerf View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 03 Mar 2024 at 8:00pm
Originally posted by Sanchez Sanchez wrote:

... can I use a light bulb with a 3 ohm resistance in place of the resistor? ...


Yes.
An ohm is an ohm is an ohm. The electrons do not care one whit.
Can't say that I would do it that way myself though Tongue
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