2 Questions - Elec Fan & Balast Resistor

[RPMagoo]

(1) Can I pick-up power, for the electric fan, at the plus side of the coil, without problems ? -- (2) Is a 1.35 ohm ballast resistor ok to use with a pertronix electronic distributor / non MSD ? -- All on a 383 Mopar. -- Thanks

 

[67Dart273]

(1) Can I pick-up power, for the electric fan, at the plus side of the coil, without problems ?

Absolutely NOT. You could pickup FAN RELAY TRIGGER power from the key side of the ballast, NOT the coil side.

(2) Is a 1.35 ohm ballast resistor ok to use with a pertronix electronic distributor / non MSD ? -- All on a 383 Mopar. -- Thanks

No idea. Follow the recommendation of whatever coil you have and Pertronix. If you have a Mopar factory coil, I'd use a factory ballast

 

[nm9stheham]

The ballast depends on the coil; some coils don't need a ballast. Look up your coil and see what is supposed to be done, or list the model here.

If you need a ballast for a Mopar, I would not use any but an OEM one, or at least and MSD 0.8 ohm ohm. The 1.35 ohm ballast is too high for the Mopar system; the stock was 0.5 to 0.6 ohms cold.

 

[66fyssh]

Here is an instruction sheet from Pertronix.

 

[nm9stheham]

The 3 ohm coils do not use a ballast. The 1.5 ohm coil, like the common 40011, does use a ballast.