I really did it this time....

elkcagg

Member
Baling hay with our gas 880 & ran out of gas 30 yards from the finish line. By accident, I left the key switch on & melted everything. Points, condensor & even the wire going to the switch was melted. Now, why do I see a 6v coil in a 12 volt system? I not an electrical genius by my guess is if I have 12v going to the coil then I need to replace it with a 12v coil...right?
 
Not quite true. Most coils are actually 6 volt but for 12 volt operation they are fitted with an internal ballast resistor.

If running a 6 volt coil on a 12 volt system there should be a separate ballast resistor in the 'run' position from key switch to coil; the coil would be fed 12 volts via the starter solenoid feed, for a good spark for starting.

RAB
 
I use 6 volt coils on a12 volt system and never had any trouble. Should use a resistor or it might be hard on the points.
 
Not quite true. Most coils are actually 6 volt but for 12 volt operation they are fitted with an internal ballast resistor.

If running a 6 volt coil on a 12 volt system there should be a separate ballast resistor in the 'run' position from key switch to coil; the coil would be fed 12 volts via the starter solenoid feed, for a good spark for starting.

RAB
 
Still can't get it to run. Has current to the points but not to the plugs? I gave up on it after buying new coil, points, condensor & replacing some melted wires but the harness to the switch is a mess as I looked further tonight. What a shame. It should of been fused but that's how we learn. I agree....the electronic ignition is definetly being considered now. Thanks to everyone who gave some insight on this. I appreciate all the help I can get.
 

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