Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life

John Deere Tractors Discussion Board

2 head lamp to 4 head lamp conversion questions

[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]

Posted by 55 50 Ron on January 15, 2013 at 08:42:35 from (

I'm converting a 630 from 2 lamp to 4 lamp. (Fender conversion too of course from tear drop to flat top)
Some time ago Buick and Deere said the 4 lamp, when dimmed, uses the "automotive" method of 2 flood lamps energized and long range spot lamps de-energized. Looking at the wiring charts on page 80-5-23 of JD Service Manual SM-2029, it doesn't show a dimming resistor for 4 lamps. So is there no "true" dimming function for 4 lamps? Is the ignition/light switch the same part number for either 2 lamp or 4 lamp? Looking at the manual diagram, it appears that all 4 lamps are never all on at the same time. Which set are called "floods" and which are "long range spots" with reference to their position of inner or outer on the fender? Is the manual diagram totally correct? Are the glass lenses different for flood and spot?

I haven't been around a 4 lamp set up so I'm "in the dark" concerning them. Just want to be sure I understand the intent of the design. Any further explanation beyond the questions I've asked would be most welcome.

Thanks for your help. Ron


Add a Reply



Optional Link URL:
Link Title:
Optional Image URL:
Optional Video Title:
Optional Video Embed:

Advanced Posting Options

Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

Advanced Posting Tools
  Upload Photo  Select Gallery Photo  Attach Serial # List 
Return to Post 

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums

Copyright © 1997-2016 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