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Farmall & IHC Tractors Discussion Board

Re: Farmall 400 fluctuaing voltages

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Posted by Jason Archer on September 10, 2006 at 16:43:42 from (12.40.158.13):

In Reply to: Farmall 400 fluctuaing voltages posted by JaredFarmall400 on September 03, 2006 at 20:03:43:

I put a digital tach on my 400 a couple of years ago and also had problems. My 400 has positve ground and was getting a "double rpm" reading. Wound up switching coils for one with an external resister (the setup on my 350) and wired the tack to that and it worked with no problems since.

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