Ballast resister

[cosmicwheels]

Hi All, I have fitted a torx starter which leave the 12v boost wire to the ballast resister unused, can I and is it worth removing the resister[mk 1] and fitting a 12v coil also will it damage the tachometer. Thank you John

[V Mad]

John, you could just fit a relay that does the same job as the old solenoid or if you want to fit a 12V coil that will not damage your tach. If you have electronic ignition then go for an electronic type coil. If you have points stick with the ballast system with relay added. If you want details how to wire the relay just ask.
Cheers

PS Are you interested in making some more air filters like yours?

[cosmicwheels]

John, you could just fit a relay that does the same job as the old solenoid or if you want to fit a 12V coil that will not damage your tach. If you have electronic ignition then go for an electronic type coil. If you have points stick with the ballast system with relay added. If you want details how to wire the relay just ask.
Cheers

PS Are you interested in making some more air filters like yours?

Hi chris would like details of the relay and could you tell me how to check the ballast resister and if it needs to be earthed as a new one i have in stock has an earth wire .Have been very busy, but been getting prices for an extension type box to weld on the back of an exsisting airbox to save using two air boxs as they are getting hard to find at a resonable price , Thanks for your help as usual. John

[V Mad]

Hi John. You just need a four pin automotive relay. Connect the coil pin 85 to starter wire (white/red) and pin 85 to chassis. The connect white ignition control wire to contact pin 30 and coil positive to pin 87. So when you turn the starter the relay closes and applies 12 volts to the coil bypassing the ballast.

The ballast resistor has two terminals, one should go to the coil positive, and the other to the ignition control circuit (white wire) but there is no earth connection. It is easiest and safest to keep to the ballast system (fitting special low resistance electronic coils only applies to certain electronic ignition systems, and may damage some types).
I hope that helps.

[cosmicwheels]

Hi John. You just need a four pin automotive relay. Connect the coil pin 85 to starter wire (white/red) and pin 85 to chassis. The connect white ignition control wire to contact pin 30 and coil positive to pin 87. So when you turn the starter the relay closes and applies 12 volts to the coil bypassing the ballast.

The ballast resistor has two terminals, one should go to the coil positive, and the other to the ignition control circuit (white wire) but there is no earth connection. It is easiest and safest to keep to the ballast system (fitting special low resistance electronic coils only applies to certain electronic ignition systems, and may damage some types).
I hope that helps.

Hi chris ,I get a reading of 12v on both sides on both ballast resisters is there away of testing them ,cheers John

[V Mad]

Hi John. Soory confused; you have two ballast resistors?

To test in circuit: short the coil NEG to chassis. then measure volts at coil POS. It should read about 6 volts.

[cosmicwheels]

Hi John. Soory confused; you have two ballast resistors?

To test in circuit: short the coil NEG to chassis. then measure volts at coil POS. It should read about 6 volts.

Thanks chris, all done one resister is a spare I tested, now reading 6volts, John