I have done a sin and converted my 44" M to 12 volt I did the 3 wire change, all working good but I have questions. The alternator I used came off another M used delco 63Amp. My gauge was 3 years old and it did not work Cheep creep! I put in an old IH guage max 20- & 20+ When I start it the guage pegs 20+ than comes back to around 5-3+. With 3 lights on never goes more than 10+ amp. I want to buy new gauge should I get 20 amp max 30 amp max or 60 max? Do I need more than 20? Thanks oldiron29
- Thread starter Oldiron29
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Bob M
Well-known Member
Ideally you should use a 60-0-60 ammeter to match your 63 amp alternator.
HOWEVER a smaller range ammeter will work just fine. My Super M has a 70 amp alternator wired thru the original factory (20-0-20) ammeter. The gage pegs briefly then settles around 2 - 3 amps every time I start the tractor. It's been doing this for 30+ years now; the ammeter is holding up fine.
HOWEVER a smaller range ammeter will work just fine. My Super M has a 70 amp alternator wired thru the original factory (20-0-20) ammeter. The gage pegs briefly then settles around 2 - 3 amps every time I start the tractor. It's been doing this for 30+ years now; the ammeter is holding up fine.
Janicholson
Well-known Member
I agree with Bob M, I have a Jeep (Willis) with a 95 amp Delco. I use a 60+ 60- amp gauge and it never gets above 40 amps and only for 30 seconds as it is started.
The gauges seem pretty robust, Were it my tractor, I would ignore it until it stopped working, then put in a 60 amp gauge. Jim
The gauges seem pretty robust, Were it my tractor, I would ignore it until it stopped working, then put in a 60 amp gauge. Jim
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