Farm Equipment - wd45 12volt

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wd45 12volt

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=14638
Printed Date: 03 Feb 2025 at 5:11am
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Topic: wd45 12volt

Posted By: Larry B
Subject: wd45 12volt
Date Posted: 02 Jul 2010 at 5:32pm

Bought a wd45 with 12 volt alternator and battery, the coil is supposably from a d17, i know the lights won't work that way but will everything work or should i get the right coil and put a resistor on it?

Replies:

Posted By: Chalmersbob
Date Posted: 02 Jul 2010 at 9:17pm

change the light bulbs to 12 volt and they will work. The D-17 coil might be a 12 volt coil, in which case you don'y need a resistor. Bob

Posted By: Brian Jasper co. Ia
Date Posted: 02 Jul 2010 at 10:04pm

Larry, do you have or can you borrow a digital ohm meter? A coil with 3 to 4 ohms resistance on the primary side is what you're after. Before I converted both of my gas tractors to electronic ignition, I was using a coil from a Kohler K series engine. A ballast resistor can be added, but it is best in my opinion to use a coil that doesn't require one. One less thing to break...

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