wiring

[joe moore]

Am I wrong?? I am installing a new 12 volt battery and resistor with a 12 volt coil..bypassing voltage regulator..as it is not needed..juice goes thru the switch to the ampmeter to the resistor than to the coil...with so many pieces of equipment it is necessary to switch batteries from one to the other..is it necessary to use the resistor that reduces current??????

 

[John T]

On a 12 volt tractor you must EITHER use a 6 volt coil and a series voltage dropping (12 to 6) external Ignition Ballast Resistor (after ignition switch ahead of coil) oRRRRRRRRRRRRRR a full true 12 volt rated coil NO BALLAST REQUIRED. If you use a true full 12 volt coil PLUS added external ballast the spark will be weak.

NOTE a 12 volt coil may be labeled "12 volts" or "12 volts NOT for use with external ballast" HOWEVER a coil labeled "12 volts for use with external ballast" or "12 volts ballast resistor required" is in reality a 6 volt coil and requires a ballast JUST LIKE IT SAYS.

Decide if you wanna make the tractor 6 or 12 volts and wire the ignition and/or any ballast as necessary per the above. If you stay at 6 volts use a 6 volt coil and no ballast. If you go to 12
do as above.

John T

 

[buickanddeere]

Measure the coil's resistance on the primary winding so we can find out if it's a 6 or 12V unit.

 

[joe moore]

its a
ford coil one post for hot wire..and spring tab to distributor...8N.. the coil is a 12 volt I am going to bypass the resistor as I am also using a 12 volt battery eliminating the voltage regulator/