Wiring diagrams to help you understand how it is done.

[953 nut 55,155]

I have a few basic electrical system diagrams that are helpful in understanding how the wiring system works. They are not specific to any particular tractor and do not include safety switches. All use the 5 post ignition switches 103-991 for Magneto and 103-990 for Battery Ignition. I failed to include fuses in the Starter Generator drawing, this is an over-site and I would encourage fuses be used as shown in the other two drawings. 

Hope this is helpful.

Magneto Ignition system with electric start and solenoid.

Battery powered ignition system with points, condenser, solenoid and electric start.

Battery powered ignition with solenoid, points, condenser, Starter Generator and a mechanical voltage regulator.

We have uncovered a shortcoming in the factory  wiring diagrams for S/G battery ignition systems with a four terminal voltage regulator. The wire from the regulator "Gen" terminal to the S/G  "A" terminal was omitted. This drawing should clear that up.

 

[johnnymag3 2,517]

Thats exactly what I was looking for     FANTASTIC    Thank you          Dielectric grease on the splices???? or not

[953 nut 55,155]

2 hours ago, johnnymag3 said:

Dielectric grease on the splices

That would be a very good idea.

[rjg854 11,356]

You da man, Richard 

[WHX?? 48,813]

Title typo aside this thread should be pinned Dick.  The only one I see missing is the one for the 70 amp solenoidless three term switch. Also if you have the cigar lighter that can be wired off the lighting point. 

Edited June 13, 2018 by WHX19

[953 nut 55,155]

10 hours ago, WHX19 said:

typo

Fixed it, thanks.

These tend to be some of the frequently asked questions that can't be answered by referring folks to the wiring diagram in the manuals.

[peter lena 8,600]

thank you 953, that is what I wanted, now its easy to swap for over for an electronic ignition. had a number of contacts and options since asking for this answer, looking at what ever is going to benefit me the most . thank you  pete

[WHX?? 48,813]

We should point out that gen terminal is located on the underside of the regulator just to the left of the resistor. Green wire in the first pic. This particular tractor was converted to a late style 5 post switch and solenoid  but the gen wire is still required.

Make sure SG posts are clean and use star washers here. This one came loose and gen light did come on. The third  wire on the armature post is going to the light.

MAKE SURE the reg mounting bracket is securely grounded, scrape paint and/or star washers as required. Some regs are mounted on rubber vibration  mounts but had a small ground strap, pay attention to that, fourth pic. Pics were off an old crusty one on the shelf so please excuse. The three side terminals should be mounted towards the gas tank on most models. This was off a 1055 where the three terminals were mounted on a bracket exclusive to short frame big blocks toward the engine.. Things got a little tight. Correct me if I'm wrong Richard.

Edited September 22, 2018 by WHX20

[jebbear 377]

Thank-You!!

Priceless piece of information here, and super easy to follow.

[953 nut 55,155]

This service builtin was brought to our attention by @Anglo Traction  and has a wealth of information about ignition switches from the late '70s and early '80s. This was a period of transition to and from battery powered ignition systems. If you need to know what switch will work for your application this is a great place to look.      #134.  

WH61-90 #134 Ignition switches 1972 models.pdf

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About This File

3 pages 105.59KB
5 pages 287.90KB
Dated February 1972

Ignition switch terminal locations
Only 2 switches identified

This is only a guess

{Illustration 1 is 101917} Replaced by 92-6785 and still available June 10, 2014 (5-terminal 4-position Battery ignition Electric start or Magneto ignition with a kill relay)
101917 switch used on
1972 Bronco 14 model 1-0422
1972 Bronco 14 model 1-0423
1972 Charger 10 model 1-0410
1972 Charger 12 model 1-0401
1972 Commando 800 4-Speed model 1-0110
1972 Raider 8 model 1-0330
1972 Raider 10 model 1-0301
1972 Raider 12 model 1-0311 (This model also made in Belgium)
1972 Raider 14 model 1-0320
1973 8hp 4-Speed model 1-0120 - Horizontal shaft (Also made in Belgium as Commando 800)
1973 8hp 4-Speed model 1-0130 - Horizontal shaft - Commando 800?
1973 8hp 8-Speed model 1-0370 - Horizontal shaft
1973 10hp 8-Speed model 1-0360 ??????????????
1973 10hp 8-Speed model 1-0365
1973 12hp 8-Speed model 1-0350 ??????????
1973 12hp 8-Speed model 1-0353 - Listed in PSB #301E for 1973-74. Suspect 1973 is wrong ?????????
1973 12hp 8-Speed model 1-0354 - Listed in PSB #301E for 1973-74. Suspect 1973 is wrong ?????????
1973 12hp 8-Speed model 1-0355 - One made in Belgium and located in Wales
1973 14hp 8-Speed model 1-0340
1973 18hp Automatic model 1-0600
1973 18hp Automatic model 1-0601
1973 18hp Automatic model 1-0610
1973 18hp Automatic model 1-0620
1973 Raider 10 8-Speed model 1-0360 - Made in Belgium
1973 Raider 12 8-Speed model 1-0350 - Made in Belgium
1974 Raider 10 4-Speed model 1-0393 ????????????????? - May not be correct

Switch 92-6785 used on
72042, 264-6 Yard Tractor, 1994 (SN 4900001-4999999)
72043, 264-H Yard Tractor, 1994 (SN 4900001-4999999)
72062, 264-6 Yard Tractor, 1994 (SN 4900001-4999999)
72063, 264-H Yard Tractor, 1994 (SN 4900001-4999999)
72083, 266-H Yard Tractor, 1994 (SN 4900001-4999999)
72103, 268-H Yard Tractor, 1994 (SN 4900001-4999999)
72042, 264-6 Yard Tractor, 1995 (SN 5900001-5900796)
72042, 264-6 Yard Tractor, 1995 (SN 5900797-5999999)
72043, 264-H Yard Tractor, 1995 (SN 5900001-5901475)
72043, 264-H Yard Tractor, 1995 (SN 5901476-5999999)
72062, 264-6 Yard Tractor, 1995 (SN 5900001-5900227)
72062, 264-6 Yard Tractor, 1995 (SN 5900228-5999999)
72063, 264-H Yard Tractor, 1995 (SN 5900001-5900498)
72063, 264-H Yard Tractor, 1995 (SN 5900499-5999999)
72084, 266-H Yard Tractor, 1995 (SN 5900001-5999999)
72103, 268-H Yard Tractor, 1995 (SN 5900001-5900600)
72103, 268-H Yard Tractor, 1995 (SN 5900601-5999999)

{Illustration 2 is 8362} Still available June 10, 2014 (5-terminal 4-position Magneto ignition HD electric start without solenoid)
8362 switch used on
1969 Charger 10 model 1-7041
1969 Charger 12 model 1-7241
1969 Electro 12 model 1-7245
1969 Raider 10 model 1-6041
1970 Charger 12 model 1-7251
1970 Charger 12 model 1-7252
1970 Charger 12 model 1-7253
1970 Electro 12 model 1-7255
1970 Raider 10 model 1-6051
1970 Raider 12 model 1-6251
1970 Raider 12 model 1-6252
1970 Raider 12 model 1-6253
1971 Bronco 14 model 1-0420
1971 Bronco 14 model 1-0421
1971 Charger 12 model 1-0400 - Uses breakerless magneto ignition 
1971 GT-14 model 1-0500
1971 GT-14 model 1-0501
1971 Raider 10 model 1-0300
1971 Raider 12 model 1-0310 - Uses breakerless magneto ignition 
1972 Charger 12 model 1-0402 - Uses breakerless magneto ignition 

{Illustration 3 is 101876} Discontinued June 10, 2014 - 1972-73 GT-14
Should be a suitable replacement ignition switch 92-6785
2 pages 91KB
101876 switch used on
1972 GT-14 model 1-0502
1972 GT-14 model 1-0503
1973 GT-14 Automatic model 1-0502-8 - Listed in attachment interchange Not listed at Toro

{Illustration 4 is 101482} Replaces 4987 and 7572 Still available June 10, 2014 (3-terminal 3-position Magneto ignition HD electric start without solenoid)


How I figured out the 1972 switches
[Switch 3656 used 1961-63 1965-66]
[Switch 6890 used 1967] 
[Switch 4988 battery ignition w/starter-gen used 1964-67 superseded to 7263] [Switch 7263 battery ignition used 1967-68] 
[Switch 102820 used 1970-71, 1973-74, 1976-77, 1979] 

{Illustration 1 is 101917} 
[Switch 101917 for battery ignition used 1970-73 superseded by 92-6785] [Switch 92-6785 used 1994-2007] 

{Illustration 2 is 8362} 
[Switch 8362 for mag ignition used 1969-72] 

{Illustration 3 is 101876} 

{Illustration 4 is 101482}
[Switch 7572 used 1968-70 superseded to 101482] [ 101482 switch magneto ignition w/starter-gen used 1971-75]

[ebinmaine 67,390]

I know this post is 6 months mature now but I wanted to thank @953 nut for taking the time to set it up in the first place and then add/edit as needed/requested by @WHX21 in post #5.

 

I used the 3 terminal ignition switch diagram, for the 867.

I'll be adding 2 fuses to the circuits.

 

 

[WHNJ701 4,165]

this is an often overlooked part of restoring tractors.  keep in mind these machines are 30 to 50 years old now.  a full rewire with new fresh copper makes a huge difference in the performance of your tractor and is well worth the time and investment 

[ebinmaine 67,390]

1 minute ago, jabelman said:

a full rewire with new fresh copper

We've done all 5 tractors now.

Every wire on all but a couple of short ones on the 2 '67s from VR to battery or field....  And those looked excellent or would have been replaced as well.

I'm thinking it'll stay a part of our standard tractor repairs to a new herd member.

 

[squonk 41,050]

Color diagrams from Bob Ellison:

 

 

 

 

 

 

Edited April 5, 2019 by squonk

[BOB ELLISON 2,981]

I did a lot of research on my C160 when I was bringing it back to life and over the years I accumulated a lot of information on it. I really like working with electric and redid some diagrams for it.

so I would like to share with all those that have trouble with it. I know these work because this is working on my C160 to this day. 

The diagrams above are for the original wiring and for a relay to run bigger lights ( blue wires)or any thing up to 15 amps, any more then 15 amps could cook your regulator. 

This is mainly for the 1974-1979 B & C series tractors, B80, B100, C100, C120, C140, C160.

PLEASE DOUBLE CHECK BEFORE YOU ORDER YOUR PARTS. THIS IS A START FOR THOSE THAT DONT HAVE A

CLUE AS TO WHAT PARTS YOU NEED.

STARTER Solenoid    Part Number: 108544  Solenoid 960151

=========================

REGULATOR-RECTIFIER  Kohler 41 403 06-S 
Stens  435-024 R10297 Voltage Regulator Replaces Kohler 4140306-S   8 - 24 HP Kohler Engines with 15 AMP Alternator. Models K181, K241, K301, K321, K482, K532, & K582. "L" Pattern with 2 Terminals.

========================================

SWITCH-LIGHTS  #102138

===============================

CONDENSER 230722-S  Replaces A237083, 237083 ,455147,
Stens 455 147 055145 455-147 055-145
Used ON K91, K141, K161, K181, K241, K301, K321, K341, K482, K532, K582 with battery ignitions

=============================================

BREAKER POINTS KOHLER# 47 150 03-S    ( 47 150 03-S - 4715003-S. stens 450 403 phelon 02770
Replaces Old Kohler Part # 4815003-S, 48 150 03-S
Napa points part number 7-01029

============================

Coil Wire KOHLER/238057-S

===================================

 COIL, IGNITION  41 519 21-S
Stens 055-133 Ignition Coil. FITS MODELS: Kohler K91-K361 with battery ignitions.

REPLACES OEM: John Deere: AM38411, Kohler: 231281, 231281-S, 41 519 21-A, 41 519 21-S. 

==========================================

SWITCH SAFETY---------   101845

==================================

SPARK PLUG USE 25 132 10-S ,Champion H10C,Auto lite 216,
 Notes: 14mm, 7/16 reach, 13/16 hex.  – Kohler K241 (10 HP), K301 (12 HP), K321 (14 HP), K341 (16 HP)

================================================

KH10091 SATOR

=====================================================================

101450 RECTIFIER-REGULATOR

========================================================================

BALL SAFETY SWITCH

===============================================================================

IGNITION SWITCH

===========================================================================

 

 

Relay

==========================================================================

 

Solenoid Starter 108437 8658 109605

==================================================================

Gauge Tachometer

===================================================================

THIS DIAGRAM IS WITH VOLTAGE GAGE AND RELAY AND A TACHOMETER.  Blue wires

 

[Wheelhorseproject 3]

I have a C 161 wheelhorse hyd. with a B & S 16HP engine 

Will this info be correct fo this tractor; if not can anyone point me to the correct information on rewiring this tractor 

 

Thanks 

Jim

Edited July 31, 2019 by Wheelhorseproject
forgot to ad notify me

[Wheelhorseproject 3]

I have a C 161 wheelhorse hyd. with a B & S 16HP engine 

Will this info be correct fo this tractor; if not can anyone point me to the correct information on rewiring this tractor 

 

Thanks 

Jim

 

Edited July 31, 2019 by Wheelhorseproject
learning - I think

[ebinmaine 67,390]

1 hour ago, Wheelhorseproject said:

I have a C 161 wheelhorse hyd. with a B & S 16HP engine 

Will this info be correct fo this tractor; if not can anyone point me to the correct information on rewiring this tractor 

 

Thanks 

Jim

@953 nut or @gwest_ca

Will one of these work for this fellow?

[953 nut 55,155]

4 hours ago, Wheelhorseproject said:

I have a C 161 wheelhorse hyd. with a B & S 16HP engine 

Will this info be correct fo this tractor; if not can anyone point me to the correct information on rewiring this tractor 

 

Thanks 

Jim

Here is a copy of the wiring system for your tractor. The wiring diagrams I posted are rather general and are intended to help understatnd how the electrical systems work.

 

[ebinmaine 67,390]

@stevasaurus or @gwest_ca

Is this thread "pinned"?

It really should be...

[stevasaurus 22,713]

Eric....this thread is in the "Instructional Threads / Electrical"  in the Reference Section.  It's pretty much either one or the other...pinning every good helpful thread defeats the purpose of having the reference section.  Also not every thread that is pinned is a helpful thread.  

[ebinmaine 67,390]

22 minutes ago, stevasaurus said:

Eric....this thread is in the "Instructional Threads / Electrical"  in the Reference Section.  It's pretty much either one or the other...pinning every good helpful thread defeats the purpose of having the reference section.  Also not every thread that is pinned is a helpful thread.  

Okay cool. Thank you sir. I was fairly sure it was pinned somewhere I just couldn't figure out where. I'll try to remember that for next time.

[stevasaurus 22,713]

It's kind of a toss up.  Some years ago (4-5), we had about 5 places where these special threads were put.  We changed all that into the Reference Section and went through all the other places and either got rid of threads that should not have been there, or moved the threads to build that Reference Section.  There is a couple of sections on the main page that have so many threads pinned, that when you open that section, you almost have to go to the second page to see what is going on.  "Transmissions" is one of those...actually I should move some of those threads to the reference section and maybe pin them there.  There is also a number of threads in the regular pages that should be in the Reference Section.  Not long ago, I moved Aldon's GT-14 thread into the Reference Section / Restorations.

   One other issue with the Reference Section, I think a lot of members don't realize that section is there.  It is to make those special threads easier to find when you need them.  Not to ramble on here, but know that when a search is done, the soft ware looks in the Reference Section also.     @ebinmaine

[RandyLittrell 3,877]

As long as we are talking about electrical, how about a recomendation of quality wire to use to rewire our old tractors. Seems like kinda of a crap shoot on quality these days with electrical parts. Thanks! 

 

 

 

Randy

[ebinmaine 67,390]

2 minutes ago, RandyLittrell said:

As long as we are talking about electrical, how about a recomendation of quality wire to use to rewire our old tractors. Seems like kinda of a crap shoot on quality these days with electrical parts. Thanks! 

 

 

 

Randy

 

I try as hard as I can to buy wire that is 100% copper. I don't know if there is any merit to it but I have read that the CCA or Copper Clad Aluminum can have a tendency to corrode due to the rules of dissimilar metals.

 

Maybe 3 years ago now? I bought a 50-foot spool of full copper 7 conductor trailer wire.

That gives me the option of cutting the outside sheath off and using seven individual wires or leaving it on where I might want it to run through something like the gas tank shelf.

I don't do restorations. We build workers. So the actual color of the wire is less important to me than it is to some.