Pertronix - ballast wire needed w/ Flamethrower coil? tach wiring? HELP!?!

I am installing a Pertronix Ignitor and Pertronix Flame Thrower coil on my 1969 Mustang as part of a full engine rebuild. The issue of ‘ballast resistor’ has me confused. Where is the resistor on the ’69 Mustang? Is it just a wire or is there a ‘box’ or something that I can identify as a ballast? I read some of the other threads on this and am not completely clear.

On the back of the instruction sheet it says that the Flame Thrower coil provides ‘resistance internally’ - 1.5 ohm….. Does this mean that I can wire the Pertronix Ignitor directly to the Pertronix coil? If I do this, do I just hook up the original wires from the harness the same as before?

Tach – I have an aftermarket tachometer that wires to the ‘-‘ side of the coil. Is the Pertronix going to screw this up? If so, how do I get around it?

I am trying to follow the wiring diagram in the '69 Mustang Service Manual but have had little luck….
The circuit diagram shows the wire from terminal ‘I’ on the relay going to the coil. The wire I have on the ‘I’ terminal goes into the main harness that runs down in front of the radiator, along the left fender and through the dash and into the fuse block. I assume it comes back(?) There is a three wire connector on the engine side of the fire wall with one wire that that goes to the coil (the other wire in the points setup came from the distributor). There is also the ‘S’ terminal wire that goes through the switch and returns to the coil through a ‘resistance wire’ I have been unable to find it. The Pertronix shows the ‘+’ wire being spliced in to this wire after the key but before the coil – or in parallel….

While were talking wiring - I also have two strange single wire connectors (both female - round in shape) on the firewall and another on the main harness that ends at the relay. What the heck is this? There is nothing attached to either of these wires… are they for diagnostic purposes? Sorry, I don’t trust the wiring on this car because during the teardown and rebuild I found that the voltage regulator was wired wrong. I wonder if somebody just started moving wires until the car ran…..

I don’t want to mess this thing up and I tried to get contact info for Pertronix Technical Assistance without any real luck (general phone only). I can do all the mechanical things on this car but the electrical drives me nuts!

Sorry this is so long…. I am just soooo confused. I can trace wires, etc if I absolutely have to but if somebody can tell me the right way I would love to avoid it....
Any assistance would be greatly appreciated!!! THANKS

Thanks for the reply.... so the balast in the '+' side needs to be removed for the Pertronix coil to work properly?

You're probably not going to believe that i am an engineer... Mechanical. I can wire my house but these 'primary' and 'secondary' loops are beyond my very basic electrical knowledge.

Thanks again.

Thanks for the replies. I (reluctantly) took the dash apart again (had to install a new speedo cable during the rebuild/upgrade project for my 3 speed to 4 speed conversion...) and found that the pink 'do not cut' wire goes from the connector just outside the fire wall to the ignition switch. I would love to get the pin out of the connector and solder the new 'bypass' wire to it but haven't had any luck yet. So, I plan to splice a new wire to the 'other' wire that goes to the same terminal on the switch (green with red I think - smaller gage) and then run the wire all the way to the coil. I will then use this wire instead of the one in the harness, thus bypassing the resistor wire without cutting it. That way if I want to go back to the stock coil later, I can without tearing the dash apart again.... Does this make sense?

Thanks!!!!!