Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   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
Kountry Life
Ford Tractors Discussion Forum

Add lights to a 641?

Welcome Guest, Log in or Register
Author  [Modern View]
Tom Fischer

11-14-2013 04:01:24

Report to Moderator

Hi I have a 1958 641, 6 volt. I got the front headlights to work, and would like to add two lights to the back (attached link, looks like 6 amps each). Also, I probably don"t need the red tail light.

Question is, how much amperage can I have on that line. I took out the buss fuse, near the OEM light switch. Looks like it says 30 amps.

New 14 gauge wiring.

Can I have total four lights, the headlights plus two more @ 6amps each?

[Log in to Reply]   [No Email]
Ultradog MN

11-14-2013 17:30:52

Report to Moderator
 Re: Add lights to a 641? in reply to Tom Fischer, 11-14-2013 04:01:24  
Converting to 12 V and using a 10si alternator would handle all 4 lights pretty easily.

[Log in to Reply]  [No Email]
Tom Fischer

11-15-2013 01:16:15

Report to Moderator
 Re: Add lights to a 641? in reply to Ultradog MN, 11-14-2013 17:30:52  
Thanks to all for the thoughtful replies.

Probably the long term solution would be to convert to 12v, but I was hoping to see how it goes this winter.

I bought a King Kutter 7' blade a few months ago, got some weights as well. Want to see how it moves the snow and slush. The driveway is about 500 feet total. But I am on a county road, so the lights seem to be a good idea, more the better.

[Log in to Reply]  [No Email]

11-14-2013 11:52:30

Report to Moderator
 Re: Add lights to a 641? in reply to Tom Fischer, 11-14-2013 04:01:24  
you COULD run it.. I'd run a seperate wire circuit for the back. the problem is you will almost assuredly be in a discharge situation with all 4 burning, and running.

for short time period.. ok.. but for extended it will overheat that generator... and that's when run at rated rpm to actually get that wattage / amperage out of it. running at lower throttle you will reduce genny load.. make it happier.. but will also be discharging the battery slowly.

COULD do that. IE.. idle down to 15a draw to keep genny happy for long term.. and be discharging.. then before shutdown, kill rear lamps and throttle up to rated rppm and run around for another 20-30 minutes to recharge storage cell.

[Log in to Reply]  [No Email]

11-14-2013 08:30:58

Report to Moderator
 Re: Add lights to a 641? in reply to Tom Fischer, 11-14-2013 04:01:24  
find a light for these..
ht t p://w w w.ledlight.com/s25-19-led-light.a spx

very little power needed.

[Log in to Reply]  [No Email]
36 coupe

11-14-2013 05:49:22

Report to Moderator
 Re: Add lights to a 641? in reply to Tom Fischer, 11-14-2013 04:01:24  
I have a red tail light because I have to travel a 1/2 mile on the highway from my woodlot.At 24 amps you are drawing more than the generator is rated for.14 wire is a bit light for 24 amps.Your generator is rated at 20 amps so 4 lights is more than the generator can handle.I have a seperate switch for my rear work light.I used to come out of the wood lot at dusk but quit earlier now. Still use the lights because stupid drivers dont know Im going 10 mph.Im putting an SMV on my wood trailer today.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

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 © 1997-2018 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