Hi have been having problems with my ironhead stuttering under load bad. Cleaned carb adjusted push rods and did static timing running better checked spark and its very weak and orange some of the time tested coil got 3.6 ohms for primary and 12.04 k ohms for secondary rear wire 5.21 k ohms front wire 2.065 k ohm 2 wires on each side of primary side 2 white one reads 12.3 v and other side with 2 red wires reads about 23.3 mv one side is power and one side is ground right? Trying to figure this out manual only shows 1 wire on each side unless its a 83 with the vacuum switch. Bike is a 81. I think once I figure out the spark issue the problem will be solved. Does anyone have any ideas.

 

it still has a 80s electronic ignition and the trigger cup is a silver color not gold ?????????

 

looking through slot cup looks gold

 

my guess is the complete ignition change dealing with a even a 20 year old ignition in a 40 something year old bike will make you crazy