Considering the "charge" and "discharge" on the face of the ammeter, which post should get the wire from the starter? This is a 55 low boy with 6 volt positive ground. Is there any way to recalibrate and clean the original meter? It seems to be getting lazy. Doesn't want to come back to 0
- Thread starter alannpa
- Start date
Bob M
Well-known Member
Most ammeters' terminals are unmarked. Or perhaps one terminal was marked with a dot of ink which is now long gone...
Not to worry however. Simply connect wiring to the ammeter however it's handy. Now turn on the lights or ignition. If it shows discharge you are all set.
But if it shows charge, simply disconnect and swap the connections. (For safety remove the battery ground terminal while making the swap!)
Unfortunately there's no way to recalibrate/clean the original ammeter - it's a sealed assembly. But new repro ammeters are readily available and inexpensive.
Not to worry however. Simply connect wiring to the ammeter however it's handy. Now turn on the lights or ignition. If it shows discharge you are all set.
But if it shows charge, simply disconnect and swap the connections. (For safety remove the battery ground terminal while making the swap!)
Unfortunately there's no way to recalibrate/clean the original ammeter - it's a sealed assembly. But new repro ammeters are readily available and inexpensive.
Janicholson
Well-known Member
If I were to remember all those I have installed I would place the battery side on the discharge side, and load on the charge side. (this assumes it is positive ground as it was originally) if it is a non stock meter, or of unknown origin I agree it is a need to test deal. A quick test is to use a spare light bulb or headlight from a car. Place this between the charge side meter terminal, and the neg bat terminal, then connect the other gauge terminal to the other bat terminal with a jumper. if it discharges, that is the way it needs to be connected. Jim
gene bender
Well-known Member
Current from the generator flows thru the ammeter to the starter post then to the battery so hook the wire going to the starter on the positive side of the ammeter. The wire going to the regulator goes on the other side. Sounds like you need a new amp guage.
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