67 ignition wiring delima

[Del S.]

Could someone help me with my wiring delima ? I have a BB with petronix ignition , no ballast resistor ,and no TI . The car was born with a TI but was removed thru the years . What should I do with the 2 pink wires (shown in the pic ) , one from the ignition switch and one in the engine wiring harness ? Do I need to add a ballast resistor or can I just join those 2 pink wires ?

[Gene M.]

Re: 67 ignition wiring delima

The instructions that came with my pertronix says that if the coil resistance is less than 1.5 ohms to use a ballast resistor. My Pertronix is the firts design.

My after market coil is 0.6 ohm so I use the standard ballast resistor. A ballast resistor from a 63 (lower resistance) is in the cards to try.

[Bob H.]

Re: 67 ignition wiring delima

Hi Del

I think you received good advice.

I have converted several stock cars and have always used the standard ballast resistor.

Bob

PS: I just converted my 67 last night.

[Roger O.]

Re: 67 ignition wiring delima

For what its worth I have put a bunch of Pertronix units on Corvettes and have never left a resistor in place and that includes the GM models with a the resistor wire in the harness. It was my understanding the Pertronix module requires that the resistor be removed.Not sure if this changes what the coil requires. Years ago I called a Pertronix tech every time I installed a Pertronix unit. I described the exact application and every time they said remove the resistor. It was almost as if when I said Corvette they said to remove the resistor. They custom made me a unit to fit a 54 (before offering it in their catalog) and I'm 99% sure I removed the resistor on that one also but I also had to add a capacitor to the neg side of the coil because of the 5.2 volts required to fire that module.

[Del S.]

Re: 67 ignition wiring delima

For what its worth I have put a bunch of Pertronix units on Corvettes and have never left a resistor in place and that includes the GM models with a the resistor wire in the harness. It was my understanding the Pertronix module requires that the resistor be removed.Not sure if this changes what the coil requires. Years ago I called a Pertronix tech every time I installed a Pertronix unit. I described the exact application and every time they said remove the resistor. It was almost as if when I said Corvette they said to remove the resistor. They custom made me a unit to fit a 54 (before offering it in their catalog) and I'm 99% sure I removed the resistor on that one also but I also had to add a capacitor to the neg side of the coil because of the 5.2 volts required to fire that module.

Roger , I have a capacitor on the pos side , so then should I add one to the neg side ? thanks del

[Del S.]

Re: 67 ignition wiring delima

The instructions that came with my pertronix says that if the coil resistance is less than 1.5 ohms to use a ballast resistor. My Pertronix is the firts design.

My after market coil is 0.6 ohm so I use the standard ballast resistor. A ballast resistor from a 63 (lower resistance) is in the cards to try.

Gene , I got the same advice from pertronix ....my coil reads 1.4 ...the petronix tech said that should be enough . Del

[Roger O.]

Re: 67 ignition wiring delima

Roger , I have a capacitor on the pos side , so then should I add one to the neg side ? thanks del

No, this was only for the 54 because of the 6volt system,long story.