1983 Brat Hitachi distributor wiring

[acarcollector]

Hello everyone, I'm looking for some help. I own a 1983 Subaru Brat non turbo automatic. Apparently the po installed a Nippondenso distributor at some point. According to a mechanic friend and also the shop manual it Brat's should have a Hitachi. I am having issues with it losing all spark above 2200-2500 RPM's so my mechanic friend recommended changing the coil and distributor back to factory specs. I found and purchased a rebuilt Hitachi. The question I have is that the pickup coil does not have any markings which connector is positive and which is negative. I am attaching a picture of what I am looking at. Does anyone know which is positive and which is negative? I couldn't find any info on this in the shop manual and the mechanic doesn't know either. Thanks for any help. Much appreciated. Bill

[el_freddo]

I usually go by the shape of the wiring as this is something that’s never changed in my brumby. 

Someone on here will know for sure. 

I can check it out thoroughly in a few days and report back if it’s not urgent.

[acarcollector]

Thank you sir, no hurry. The wiring was cut and spliced when the original Hitachi was replaced with the Nippendenso. Thanks again, Bill

[moosens]

Maybe swapped for the advance curve. That was a bit of a thing to do for some. I’m not positive that applies to yours but i seem to recall the automatics had a better advance curve and maybe FWD different from 4wd ? I would have to check a parts manual. But that was my only thought on why they swapped it out. 
 

My 79 4wd wagon was swapped out with a FWD complete engine and exhaust. So i had to decipher that at one point due to ignition parts. Same deal it’s Hitachi or ND.

Good luck with it.