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CASE VAC positive to negative ground chnage

C

Chuck Greydanus

New User
Help! I am looking for instructions to convert my Case VAC from positive ground to negative ground so we can connect the alternator. A few years ago I have these instructions but I did not get it done and now I cannot find the instructions. Any help would be appreciated. Thank you,
Chuck
 
Chuck,

BEFORE you wire up that (I assume neg ground) alternator

1) Connect battery with its Negative to frame ground and Positive cable wherever it used to go (starter switch or solenoid etc), its just that now its on the + battery post instead.

2) If it has an ammeter, its leads need swapped side to side, or else it will register just bass ackwards.

3) If its a battery powered coil distributor igition instead of a Magneto, the coil leads need swapped so + now wires to the ignition switch and - wires to the distributor. If its a Magneto no change is required, it dont use battery power

4) The starter will still turn the same direction no change required

You dont state what alternator or ask for help wiring it so no response to that nor did you ask any 6 to 12 volt conversion questions.

Best wishes and Merry CHRISTmas

John T
 
First I thank you f0r your reply. I have changed the tractor from 6V to 12V a few years ago but have just kept charging the battery. My son and I are not rebuliding the engine and gasket kits for every liquid possible to stop the gasket leaks. I mounted an alternator but have not wired it until after I switch to a negative ground. You have been very helpful.

I am also looking for the two rubber shocks that are mounted under the seat so if you know if the Case 300 seat rubbers will fit let me know.

Now I will get my son to rewire as you directed.
 
I had the opportunity to look this over this past weekend. We have a single post alternator. Will this make any differences in how we wire for a negitive ground?

Thank you,
Chuck
 
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