Ok, several months ago I purchased a new ignition switch and cut out relay for my 1950 John Deere M. What I did not do was read the fine print online about what I bought. I actually bought a voltage regualtor instead of a cut out relay ands I bought the wrong ignition switch. The stuff that I bought was for a 420/430. Since it has been a couple months since I purchased these and I dont have the receipt I decided to wire the tractor using the 420/430 schematics. Every thing works except the amp gauge does not move. I also replaced this with the correct one (I got this through K&K). I measured the voltage off of the genreator and I have 6.65vdc. What am i missing here? Should I just bite the bullet and purchase the correct cut out relay and ignition switch? Thanks
- Thread starter Tim14167
- Start date
M-MAN
Well-known Member
- Location
- Bostic, NC
Most of the online stores are selling the wrong M switch and a good many the reg as well. They don't do their homework and think all Dubuques are the same.
As long as you used the 420 with a regulator diagram the only difference you'll see is the regulator will keep it from overcharging the battery on long runs. The cut-out won't regulate the current. The 420 style is better even if it isn't correct.
At 6.6v you are charging but I doubt that would move the needle. It usually doesn't on a fully charged system except at start up. If you aren't staying charged double check your grounds and then go through John T's troubleshooting guide. You'll find it here easy doing a search.
As long as you used the 420 with a regulator diagram the only difference you'll see is the regulator will keep it from overcharging the battery on long runs. The cut-out won't regulate the current. The 420 style is better even if it isn't correct.
At 6.6v you are charging but I doubt that would move the needle. It usually doesn't on a fully charged system except at start up. If you aren't staying charged double check your grounds and then go through John T's troubleshooting guide. You'll find it here easy doing a search.
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