Here's my plan for wiring the CA
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210391
Printed Date: 15 Mar 2026 at 5:14pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Here's my plan for wiring the CA
Posted By: J&J
Subject: Here's my plan for wiring the CA
Date Posted: 14 Mar 2026 at 3:16pm
Any thoughts or advice... |
Replies:
Posted By: PaulB
Date Posted: 14 Mar 2026 at 4:58pm
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I would just get a wiring harness from "The Brillman Co." http://Www.brillman.com" rel="nofollow - Www.brillman.com Just tell them when ordering what alternator you wish to use and it will be plug and play. There's no need to make it any more complex than it needs to be. ------------- 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 |
Posted By: steve(ill)
Date Posted: 14 Mar 2026 at 7:23pm
print looks good.. I think you got it....... I did the same thing 20 years ago... Made up 5 harnesses for "B" tractors...but i have toggle switch to turn ON.. then push button to START.... used them all.. 
Companies charge $160. just for the WIRES... then you need the switches and fuses if any. Cost is minimal if you got the understanding of electricity.. ------------- Like them all, but love the "B"s. |
Posted By: Les Kerf
Date Posted: 14 Mar 2026 at 8:25pm
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Anyone who will put that much effort into a schematic will have no problem building a first-class harness.  I usually roll my own, but had Grandson do the wiring on the CA last year just for the education. Materials are getting quite spendy nowadays. |
Posted By: Jgranat
Date Posted: 15 Mar 2026 at 6:27am
| I wire all my tractors similar to this, 5 ACs, 4 Fords, 2 Farmalls, no factory harnesses. Troubleshooting should be easy, if they ever fail me....every one is 12 volt negative ground. |
Posted By: jaybmiller
Date Posted: 15 Mar 2026 at 6:49am
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well, since you asked.... 1) remove one of the fusible links in the alt-bat feed 2) install a +-40 amp ammeter 3) replace 10SI with the smaller CS-130 series or a Denso unit 4) install a 4 place fuse block instead of the 'power ' fusible link 5) one color per function 6) crimp,solder, heat shrink all end connectors
------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: Les Kerf
Date Posted: 15 Mar 2026 at 8:17am
Good points to consider.  I much prefer a voltmeter rather than an ammeter, but I am too much of a cheapskate to remove a functional ammeter  I am not a fan of fusible links. The 10SI alternator is indeed a tight fit on a Model CA as there is not much room for adjustment next to the steering arm, but it can be made to work so long as the adjustable pulley on the water pump isn't rusted tight.
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jaybmiller wrote:Posted By: jaybmiller
Date Posted: 15 Mar 2026 at 8:45am
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voltmeter can lie, only shows the potential or possible energy whereas an ammeter ACTUALLY shows electrons moving in and out of the battery. 'they' went from ammeters to voltmeters as a cheap cheat.. as they're easier to intall( cheap and universal). ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |