(800) 853-2651
SHOP NOW

Wiring Diagram for Farmall 300 RC 12V conversion

W

WiJay

Member
Does anyone have a diagram for a 300 RC conversion to 12 volt? I used the one on here for a M, but I have a few more connections, fuse,light switch.
Changed the lights to 12V it runs,starts but when I shut it off the ammeter shows discharge, so I have to disconnect the battery cable.
Any ideas? I tested the altenator 1-2 connections with the switch shot off and they both show power, is this correct?
Thanks
 
Jay - Your problem is the alternator #1 terminal should showing 12 volts with the ignition off. (It should show 0 volts)

To fix, wire so the #1 terminal is fed from the switched (coil, I or IGN) terminal on the ignition switch, with either an indicator lamp or diode in series between the switch and the #1 terminal.
 
You must log in or register to reply here.

Similar threads

D
SA Wiring Issue
Replies
19
Views
347
Doug Kieta
D
K
Farmall M charging issue - must rev engine for charge
Replies
12
Views
551
Turkeyfoot
Turkeyfoot
D
Trying to understand cab/lights wiring connection to light switch on farmall 826 diesel
Replies
2
Views
258
used red MN
U
K
222 wiring diagram
Replies
2
Views
781
karl h
K
R
Farmall H 12v Conversion
Replies
8
Views
725
charlieu
C
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

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
Website Accessibility Policy

Back
Top