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rrhuehn 
Bronze Level
Joined: 14 May 2017
Location: wisconsin
Points: 3
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 Topic: wd45 amp meter question
Posted: 14 May 2017 at 6:15pm |
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I purchased a wd 45 which has been converted to 12 volt. It never charged the battery so I put a new alternator on and tested it and still no charge. Found out someone had cobbled some wires to make it run. I used a chart to wire it back to normal and no spark, found out the amp meter is bad, can I wire this with no amp meter? Is that a problem or does it need to be there? If I can wire with no meter is there a chart out there of how I need to do it?
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Gerald J.
Orange Level
Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636
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Posted: 14 May 2017 at 7:41pm |
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To do without an ammeter hook the two wires that went to the ammeter together. The old ammeter probably didn't survive the charging current the alternator can give. Probably ought to be a 60-0-60 ammeter for the typical 10SI alternator instead of the original 20-0-20 or 30-0-30 ammeter. I like to have an ammeter so I can detect proper charging. The charging wire also ought to be 6 or 8 gauge copper to carry the alternator current safely.
Gerald J.
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7574
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Posted: 14 May 2017 at 8:55pm |
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Why would you want to eliminate the ammeter? To save a few bucks? They do not cost much. As Gerald points out, it gives you an idea if the charging system is working as it should.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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rrhuehn
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Joined: 14 May 2017
Location: wisconsin
Points: 3
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Posted: 15 May 2017 at 8:10am |
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No not to save a few bucks only because I had it disabled in my shop and needed it out. I did wire it without one and may replace it later with a bigger one. It is charging now when I test the voltage on the battery with a meter running and reved up it's over 14 volts.
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Gerald J.
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636
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Posted: 15 May 2017 at 11:06am |
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It should only go to 14.200 volts otherwise the battery will be overcharged.
Gerald J.
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