Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

1941 Farmall M Switch Wiring Issue

Goto page 1, 2  Next

 
Post new topic    
View previous topic :: View next topic  
Author Message
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Wed Aug 03, 2016 12:46 pm    Post subject: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Newbie here, long time browser but I am now stumped and need a little help.

I recently picked up a 1941 M and the lights and switch are disconnected but still there. I got a new ammeter, starter switch and lights since this is going to be a working tractor for brush hogging and snow removal but can not find a schematic on how to wire up the switch. Tractor is 12 volt.

I need some help hooking up the lights and getting all the wire fixed up. The lights I got are aftermarket ATV style flood lights to put off a little more light but, I am keeping the tear drop lights for later. Here are a few pictures of what i am dealing with.

I have replaced both rear axle seals, pto seal, oil pan gasket and am currently waiting on the transmission and belly pump seals but they are next.

Thanks in advance!
 
Back to top
View user's profile
Brent Zappe
Long Time User


Joined: 12 Dec 2010
Posts: 998


Report to Moderator

PostPosted: Wed Aug 03, 2016 3:00 pm    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

In reference to a Jensale service book on page number 107. The electrical equipment is drawn up.(1) You have a Field circuit resistance that hooks up from the of field side of the generator.(2) the battery side of the voltage regulator wire feeds to the Load side of the Amp meter.(3)There is wire that runs from that hook up to the fuse side of that light switch. (4)Light switch there are two spots for light hook ups. (4A) is front lights it looks light there on top found top of a dimmer resistance that is the top not the bottom on. (4B) should be the back light post. it is the one between the bottom resistance unit and the top dimmer resistance unit. (5) the last hook up to your amp meter is the Hi side which wires run to the starter unit. My book read for a 6 or 12 volt system (generator with separate voltage regulator) Also shows me a positive ground system. I hope this helps you out good luck Brent
 
Back to top
View user's profile
Dave Sherburne, NY
Long Time User


Joined: 14 Mar 2004
Posts: 1310


Report to Moderator

PostPosted: Wed Aug 03, 2016 4:39 pm    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Try this
Bob Melvilles wiring diagrams

 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Wed Aug 03, 2016 5:15 pm    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Thanks guys!

Does it matter if mine is 12 volt vs 6 volt? Also, my switch appears to be missing a resistor wire I think.

The previous owner also only had wires to one side of the ammeter and one going from the push button switch to the ammeter.
 
Back to top
View user's profile
John M
Tractor Guru


Joined: 04 Feb 1999
Posts: 8615
Location: Gray Court, SC

Report to Moderator

PostPosted: Thu Aug 04, 2016 3:16 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

What it looks to me like is the previous owner is using the light switch as the on/off switch, and the pushbutton is going to a solenoid maybe for the starter? Cant tell where the 2black wires on the gauge, and the blue wire on the resistor are going. Also looks like at some point it possibly had a one wire alternator on it and used an oil pressure switch for excitement.

Are you planning on replacing the solenoid with a factory type push button, and on/off switch?
 
Back to top
View user's profile
gene bender
Tractor Guru


Joined: 28 Jun 2009
Posts: 10676


Report to Moderator

PostPosted: Thu Aug 04, 2016 3:45 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Looks like you need to remove everything and start over using BOB Ms dia. as you have a mess there
 
Back to top
View user's profile
BarnyardEngineering
Tractor Guru


Joined: 23 Mar 2016
Posts: 5344


Report to Moderator

PostPosted: Thu Aug 04, 2016 3:58 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

I agree with Gene. There are too many "customizations" to that wiring system to even try to figure out what the previous owner did, unless you are VERY experienced in wiring tractors.

Just rip it all out and start over, using Bob M's wiring diagram for a 12V alternator.
 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Thu Aug 04, 2016 4:48 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

I agree, probably best to just start over. One last question. The switch has what I would call 4 positions, where it is plus three more. Without that other little pig tail resistor wire is the switch any good?

Thanks again
 
Back to top
View user's profile
John M
Tractor Guru


Joined: 04 Feb 1999
Posts: 8615
Location: Gray Court, SC

Report to Moderator

PostPosted: Thu Aug 04, 2016 6:19 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

It will still work and function as a light switch, but you will just have high beams, no low beams. Am I correct in saying the red
wire goes to the resistor forthe coil? If so, you can use that psoition for the lights.
 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Thu Aug 04, 2016 7:28 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

I will have to look. I don't need low beams. Tractor is at my in laws shop couple hours away. I don't have the tools they do on the farm. I may get there this weekend.
 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Thu Aug 04, 2016 10:17 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

So looking at Bobs Schematic I am trying to merge these two schematics and the ammeter is throwing me off. The electrical box does not show the ammeter wired to it but the 12 volt alternator schematic shows the ammeter wiring going to the switch...am I missing something? Also, is the thing circled in blue the resistor...if so do I just tie into it to break the current...the PO has 3 wires coming into it?? I am not very wire savvy. I am going to strip all the wires off the tractor for the most part and follow this schematic tomorrow night it sounds like if I can get the wife to let me slip away. Thanks again guys, I promise you I am more mechanically inclined then it appears Shocked




 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Thu Aug 04, 2016 10:26 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote


The tractor was negative ground when i got it...it ran fine but rest of the wires are a mess.
 
Back to top
View user's profile
John M
Tractor Guru


Joined: 04 Feb 1999
Posts: 8615
Location: Gray Court, SC

Report to Moderator

PostPosted: Thu Aug 04, 2016 1:19 pm    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Diagram 6 would be for a Super M, Super H, etc with the on/off switch in the box,(Just imagine the switch and a fuse holder between the gauge and light switch on your box.) but the wiring is basically the same. Just do one system at a time. Assuming that you have a 10SI alternator, wire per diagram 5. The circled item is the ballast resistor for the COIL, not the lights. It appears as though someone is using it as a power source for something else. (2 wires on the switch side, 1 on the coil side.)
 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Thu Aug 04, 2016 1:47 pm    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Yeah, I figured that was the resistor but Diagram 5 only shows one wire going to it from the ignition switch and one to the distributor. It has more than that now and I just wanted to make sure there wasnt a reason.

My main concern is that the two diagrams show different wires going to the ammeter from different places and I wasnt sure if the normal M was different or if the switch diagram was different for the M vs Super M.

Thanks again!
 
Back to top
View user's profile
perth
New User


Joined: 03 Aug 2016
Posts: 10


Report to Moderator

PostPosted: Sat Aug 27, 2016 11:44 am    Post subject: Re: 1941 Farmall M Switch Wiring Issue Reply to specific post Reply with quote

Ok...so I wired it all up per the diagrams. Lights don't work and tractor don't start and amp meter (brand new from this site) does nothing. I ran a jumper from battery direct to pull out on/off switch and it fired right up. The lights I think I will just put in a toggle switch in positive from battery and ruin wire to negotiate on battery and call it good.

Any ideas? I'm frustrated. I'm sure light switch it bad.
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Farmall & International Harvester (IHC) All times are GMT - 8 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters