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Makotosun

MG1T 12v electrical conversion?

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MG1T 12v electrical conversion? was created by wyx_

Howdy folks,

Bike has been sitting a while now and came to find out the ignition coil was toast. Tested with a generic 6V battery and checked for OL with a multimeter. Found a similar coil for sale on eBay but I was wondering if it is possible to convert to 12v. I know the magneto makes things more of a PITA but does anybody know of a 12v "winged" swap?

Generally curious because I really don't want to risk a purchase on an untested coil and come to find it also cooked.
05 Sep 2023 11:12 #1

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Replied by MarkT on topic MG1T 12v electrical conversion?

MG1T has a magneto ignition.  Does not need a battery for spark.  Ignition coil is technically neither 6 volt or 12 volt.  Should have only one small wire going in to the ignition coil and the large coil wire coming out.  (You must have a later MG1T as early models had the ignition coil under the flywheel on the stator plate)

I've found the Emgo 24-71532 coil www.amazon.com/gp/product/B00230959C works well on the Yamaha magneto systems.  It was recommended years ago on the "old" Yamaha forum as there is a lot of junk out there for sale.  I prefer original but I've never had a problem with this Emgo. 

P.S.  Are you sure your coil is bad?  I'm not sure from your description how you tested it

 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
05 Sep 2023 11:31 #2

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