I don't the the exact answer. Many the ECU's were wired differently. And I swapped the steering column and harness from my '88 T/C donor car. So, I never had to deal with that. There was a resistance wire in the column that might have been for the coil. IF..., (and, I don't know) the Pinto had a resistance wire as well it would (at least should) need to be rated the same as the T/C setup.
All that said, I believe (but am not not 100% sure) there is a constant 12V+ (nominal) voltage to the coil. IF..., it works like points and say..., the Pertronix systems the coil is always 12V+ hot and the pulsing of the ground is what triggers the coil.
Jerry (Old Kayaker) posts some the the manual information and if you search this site you may find your answer. Sorry I'm no more help, but hope you get an answer soon.