Rally-Pac Wiring

[Sparksteam]

I have a Rally-pac on my mustang which isn't working. I suspect that the wire that needs to connect to the distributor side of the ignition coil isn't connected. But when I look at the wire colors coming from the rally-pac, they don't seem to match any rally-pac diagrams I see online. I believe the harness is factory. Is anyone familiar with this rally-pac wiring? If so, can you verify if the current connections are correct, and can tell my which wire needs to connect to the coil? The loose red wire in the picture was connected to the green connector.



Thanks.

 

[9T02R]

I have a Rally-pac on my mustang which isn't working. I suspect that the wire that needs to connect to the distributor side of the ignition coil isn't connected. But when I look at the wire colors coming from the rally-pac, they don't seem to match any rally-pac diagrams I see online. I believe the harness is factory. Is anyone familiar with this rally-pac wiring? If so, can you verify if the current connections are correct, and can tell my which wire needs to connect to the coil? The loose red wire in the picture was connected to the green connector.



Thanks.

Two reds from the Rally Pac? This graph may help. It is possible the tac has failed. Mine has. Brian

 

[Sparksteam]

Two reds from the Rally Pac? This graph may help. It is possible the tac has failed. Mine has. Brian

Thanks Brian! Yeah, it IS over 35 years old. But, the wire colors just don't make sense. I will video the current behaviour when I run it again today. If I could make sense of the wires, I could try to figure out how to test the tach. Thanks again!